JP5589494B2 - Statistical calculation apparatus and program - Google Patents

Description

  The present invention relates to a statistical calculation apparatus having a function of performing statistical calculation on input statistical data and a program thereof.

  Conventionally, a small electronic calculator generally called a scientific calculator having a statistical calculation function has been widely used.

  For example, Patent Document 1 discloses an apparatus for performing statistical calculation by graphing two or more sets of statistical data together without having to respecify the sets of statistical data one by one.

  In such a scientific calculator, an inexpensive model has only a limited ROM and RAM. Therefore, the statistical data that can be registered is limited.

  For example, a scientific calculator having a statistical data area capable of registering 80 statistical data can only have a maximum of 40 statistical data when processing two variables such as (X, Y) data. The statistical data beyond the 41st data cannot be handled.

  Similarly, although there are only 80 statistical data areas, there are models that can continue to input data by selecting the Edit OFF mode when the registered number is going to exceed the 80th. Are known. This is because necessary values such as the number of data n and the cumulative value Σx are calculated at the time of data registration, so the already calculated data can be overwritten without reusing the already calculated data. It is.

JP-A-10-27163

  In the latter scientific calculator, the number of registered statistical data can be increased by overwriting the statistical data in the Edit OFF mode, but past data cannot be referred to or modified at all. It will not be possible.

  The present invention has been made in view of such a problem, and can handle the number of data exceeding a predetermined statistical data area, and the data remaining in the statistical data area can be referred to and edited. It is an object of the present invention to provide a statistical calculation apparatus and a program that enable it.

The statistical calculation apparatus according to claim 1 is a statistical data input means for inputting a plurality of sets of statistical data, and a statistics for storing a plurality of sets of statistical data input by the statistical data input means up to a predetermined area. Data storage means; and statistical calculation means for calculating a plurality of sets of statistical data stored by the statistical data storage means to calculate a statistical calculation value, and an input error among the set of calculated statistical data A setting means for setting a condition to be determined as not the erroneous statistical data input in the step, and after the statistical data storage means stores the set of statistical data up to the predetermined area, the statistical data input When a set of statistical data is newly input by the means, among the sets of statistical data already calculated by the statistical calculation means, the condition set by the setting means is set. Remove the statistical data satisfying from the statistical data storing means, and statistical data updating means for storing a set of statistical data to which the newly entered into the statistical data storage means, stored in the statistical data storage means, Statistical data correction means for displaying and correcting a set of statistical data calculated by the statistical calculation means other than deleted by the statistical data updating means, and a set of statistical data corrected by the statistical data correction means And a statistical recalculation means for calculating a statistical calculation value by performing recalculation using the recalculation means.
The statistical calculation apparatus according to claim 2 is the statistical calculation apparatus according to claim 1, wherein the statistical data update unit converts at least a part of a set of statistical data calculated by the statistical calculation unit to the statistical data. A notification means for notifying deletion from the storage means; after notifying the deletion by the notification means, deleting at least a part of the set of calculated statistical data from the statistical data storage means; It is characterized by performing.
The statistical calculation apparatus according to claim 3 is the statistical calculation apparatus according to claim 1 or 2, wherein either one-variable statistical calculation or two-variable statistical calculation is performed as a statistical calculation by the statistical calculation unit. A statistical calculation selection means for selecting, and when the statistical calculation selection means selects one-variable statistical calculation, the statistical data input means inputs one statistical data as a set of statistical data, and the statistics The data update means deletes at least one calculated statistical data from the statistical data storage means as at least part of the set of calculated statistical data, and the two-variable statistical calculation is selected by the statistical calculation selection means The statistical data input means inputs two statistical data as a set of statistical data, and the statistical data update means As at least a part a set of statistical data, to delete a computed at least two statistics from the statistical data storage means, characterized in that.
The program according to claim 4 is a computer-readable program for controlling a computer of an electronic device, wherein the computer is connected to statistical data input means for inputting a plurality of sets of statistical data, and the statistical data input means. Statistical data storage means for storing a plurality of sets of input statistical data up to a predetermined area, and statistical calculation means for calculating a statistical calculation value by calculating a plurality of sets of statistical data stored by the statistical data storage means Setting means for setting a condition to be determined not to be erroneous statistical data input due to an input error in the set of statistical data already calculated, and the statistical data storage means to the predetermined area up to the predetermined area After storing the data set, a statistical data set is newly input by the statistical data input means, Of the statistical data sets calculated by the statistical calculation means, the statistical data satisfying the conditions set by the setting means is deleted from the statistical data storage means, and the newly input statistical data set is Statistical data update means to be stored in the statistical data storage means, stored in the statistical data storage means, except for deleted by the statistical data update means, displaying a set of statistical data calculated by the statistical calculation means, It is characterized by functioning as statistical data correcting means for correcting, statistical recalculating means for calculating a statistical calculation value by performing recalculation using a set of statistical data corrected by the statistical data correcting means. .

  According to the present invention, a statistical calculation apparatus capable of handling a number of data exceeding a predetermined statistical data area and enabling reference and editing of data remaining in the statistical data area, and a program thereof Can provide.

FIG. 1 is a block diagram showing a configuration of a scientific calculator according to an embodiment of a statistical calculation apparatus of the present invention. FIG. 2A is a diagram showing a first part of a series of flowcharts of the statistical calculation processing of the first embodiment by the scientific calculator. FIG. 2B is a diagram showing a second part of a series of flowcharts of the statistical calculation processing of the first embodiment by the scientific calculator. FIG. 3 is a diagram for explaining a method of deleting old data during the statistical calculation process of the first embodiment of the scientific calculator. FIG. 4 is a detailed flowchart of old data deletion processing during the statistical calculation processing of the scientific calculator according to the first embodiment. FIG. 5 is a diagram showing a specific example of the transition of display accompanying the statistical calculation processing of the first embodiment of the scientific calculator. FIG. 6 is a diagram showing a detailed flowchart of old data deletion processing during statistical calculation processing of the second embodiment by the scientific calculator. FIG. 7 is a diagram for explaining a method of deleting old data during the statistical calculation process of the second embodiment of the scientific calculator.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a scientific calculator 10 according to an embodiment of a statistical calculation apparatus of the present invention.

  The scientific calculator 10 includes a control unit (CPU) 11 including a computer or the like, and a key input unit 12, a liquid crystal (LCD) screen 13, a memory 14, and a storage medium reading unit 15 are connected to the CPU 11. .

  Although not particularly shown, the scientific calculator 10 has a small size that allows a user to hold it with one hand and operate it with one hand because of its portability, and has a key input unit 12 and an LCD screen 13 on the front of the main body. Is provided.

  The key input unit 12 is a number / character / arithmetic symbol key group for inputting numbers, characters, arithmetic symbols or instructing execution of an operation, a function function key group for inputting various function commands, A cursor displayed on the LCD screen 13, a cursor key for performing a pointer movement operation, a data item selection operation, and the like are provided. The numeric / letter / arithmetic symbol key groups include “0” to “9” (numeric) keys, “+”, “−”, “×”, “÷” (arithmetic symbols) keys, and “EXP” (exponential function) keys. , “CALC” (calculation) key, “EXE” (execute) key, “AC” (clear) key, and the like are arranged. As the function function key group, a “log” key, an “ln” key, a “sin” key, a “cos” key, a “tan” key, and the like are arranged.

The memory 14 includes a flash ROM and a RAM (not shown).
The flash ROM stores in advance a system program that controls the entire processing in the electronic circuit of the scientific calculator 10, and also stores a computer control program for executing arithmetic processing according to an input from the key input unit 12 in advance. It is remembered. The CPU 11 activates the statistical calculation program 14a in accordance with the input data input from the key input unit 12, and controls the operation of each part of the circuit using the RAM as a working storage area. The computer control program includes a statistical calculation program 14 a that performs statistical calculation in response to statistical data input from the key input unit 12.

  The RAM is also provided with an input buffer 14b, a statistical data area 14c, a designated statistical type area 14d, a statistical calculation data area 14e, a data count / data storage count / maximum storage set count area 14f, and the like.

  Here, key input data such as numerical values and various commands input by the key input unit 12 are sequentially stored in the input buffer 14b.

  The statistical data area 14c registers statistical data input by the key input unit 12 and stored in the input buffer 14b. In the present embodiment, it is assumed that the statistical data area 14c has a maximum capacity for registering 80 pieces of statistical data.

  The designated statistical type area 14d registers the designated content to be executed among a plurality of statistical operations provided in the scientific calculator 10 that are also input from the key input unit 12 and stored in the input buffer 14b. For example, the scientific calculator 10 can perform one-variable statistical calculation and two-variable statistical calculation.

  In the one-variable statistical calculation, statistical calculation data relating to the input statistical data x, specifically, summation, sum of squares, number, average, population standard deviation, and sample standard deviation can be calculated.

The two-variable statistical calculation includes calculation of regression calculation, logarithmic regression calculation y = A + BlnX, e-exponential regression calculation y = Ae ^BX , and ab exponential regression calculation y = AB ^X. Regression calculation includes a primary regression calculation y = A + BX and the quadratic regression calculation ^{y = A + BX + CX 2} .

  In the linear regression calculation, statistical calculation data regarding the input statistical data x, specifically, sum, square sum, cube sum, fourth sum, average, population standard deviation, sample standard deviation, minimum value, and maximum Value, total sum, square sum, cube sum, minimum value, maximum value, sum of products of statistical data x and statistical data y, (square of statistical data x × statistical data y) , The number of statistical data (x, y), sample standard deviation for statistical data y, calculation of regression coefficient constant term A in regression calculation, calculation of regression coefficient constant term B, calculation of correlation coefficient r, x Calculation of the estimated value and calculation of the y estimated value can be performed.

In the quadratic regression operation, statistical calculation data regarding statistical data x and y, specifically, sum, square sum, cube sum, fourth sum, average, population standard deviation, sample standard deviation, minimum value, and maximum The sum of values, the sum of squares, the sum of cubes, the minimum and maximum values, the sum of products of statistical data x and statistical data y, the sum of (square of statistical data x × statistical data y), Number of statistical data (x, y), sample standard deviation regarding statistical data y, calculation of constant term A of regression coefficient in regression calculation, calculation of constant term B of regression coefficient, calculation of constant term C of regression coefficient, x ₁ calculation of the estimated value, the calculation of x ₂ estimates, and calculation of the calculation of y estimate can be performed.

  In logarithmic regression operation, e-exponential regression operation, and ab exponential regression operation, statistical calculation data regarding input statistical data x and y, specifically, summation, sum of squares, sum of cubes, sum of squares, average, Population standard deviation, sample standard deviation, minimum value, maximum value, total sum, square sum, cube sum, minimum value, maximum value, statistical data x and statistical data y related to the input statistical data y , Sum of (statistical data x square x statistical data y), number of statistical data (x, y), sample standard deviation for statistical data y, calculation of regression coefficient constant term A in regression operation, regression coefficient constant Calculation of term B, calculation of correlation coefficient r, calculation of x estimated value, and calculation of y estimated value can be performed.

  In addition, since the calculation method of each calculation is a conventionally well-known method, the detailed description is abbreviate | omitted.

  The statistical calculation data area 14e stores statistical calculation results calculated as needed each time statistical data is input.

  The data count / data storage count / maximum storage set count area 14f includes a data count n indicating the number of input statistical data, a data storage count m indicating the statistical data storage count in the statistical data area 14c, and a statistical data area 14c. Stores the maximum number of storage groups indicating the maximum number of storage groups of statistical data. The maximum number of storage groups is set to 80, which is the maximum capacity of the statistical data area 14c, when one-variable statistical calculation is selected, and the maximum of the statistical data area 14c is selected when two-variable statistical calculation is selected. Forty sets that are ½ of the capacity are set.

  The storage medium reading unit 15 reads / writes data from / into a storage medium (memory card or the like) 20 to be mounted, whereby a system program or computer control stored in advance in the flash ROM of the memory 14 is performed. The program update data can be read from the storage medium 20 to update the program in the flash ROM, and the statistical calculation results stored in the statistical calculation data area 14e of the memory 14 can be stored in the storage medium 20. .

  Next, the operation of the scientific calculator 10 having the above configuration will be described.

(First embodiment)
2A and 2B are diagrams showing a series of flowcharts of the statistical calculation processing of the first embodiment by the scientific calculator 10. FIG. FIG. 3 is a diagram for explaining a method of deleting old data during the statistical calculation processing of the scientific calculator 10 according to the first embodiment. FIG. 4 is a detailed flowchart of the old data deletion process during the statistical calculation process of the scientific calculator 10 according to the first embodiment.

  When the calculation type is designated by the user's operation of the key input unit 12, the designated content is stored in the input buffer 14b. Therefore, the designated content stored in the input buffer 14b is stored in the designated statistical type area 14d of the memory 14. (Step S11). If the designated calculation type registered in the designated statistical type area 14d is not a two-variable statistical calculation, that is, if it is a one-variable statistical calculation (step S12 (NO)), the number of data in the memory 14 / the number of stored data In the maximum storage group number area 14f, the maximum capacity number (80 groups in the present embodiment) of the statistical data area 14c is set as the maximum storage group number (Max group number) (step S13). On the other hand, if the registered specified calculation type is a two-variable statistical calculation (step S12 (YES)), the maximum number of stored sets (Max sets) is stored in the data count / data storage count / maximum storage set count area 14f. As the number, the maximum capacity of the statistical data area 14c ÷ the number of 2 (40 sets in the present embodiment) is set (step S14). After the maximum storage group number (Max group number) is set in this way, the data number / data storage number / data number n and data storage number m in the maximum storage group number area 14f are each initialized to 0 (step S15). .

  When a set of statistical data is input by the user's operation of the key input unit 12, the input statistical data is stored in the input buffer 14b and displayed on the LCD screen 13 (step S16). ). In the case of a one-variable statistical calculation, one statistical data x is input, and in the case of a two-variable statistical calculation, two statistical data x and y are input.

  If the statistical data is input in this way, next, the input statistical data stored in the input buffer 14b (and if the statistical calculation data is already stored in the statistical calculation data area 14e of the memory 14) Statistical calculation data) is used to calculate each statistical calculation data, and the result is overwritten and stored in the statistical calculation data area 14e (step S17). For example, if a linear regression operation is specified, the sum, square sum, cube sum, fourth sum, average, population standard deviation, sample standard deviation, minimum value, and maximum value for the input statistical data x , Sum, square sum, cube sum, minimum value, maximum value, product sum of statistical data x and statistical data y, (square of statistical data x × statistical data y) Summation, number of statistical data (x, y), sample standard deviation for statistical data y, calculation of constant term A of regression coefficient in regression calculation, calculation of constant term B of regression coefficient, calculation of correlation coefficient r, x estimation The calculation of the value and the calculation of the estimated y value are performed, and each calculation result is stored in the statistical calculation data area 14e.

  Then, the data number n and the data storage number m set in the data number / data storage number / maximum storage set number area 14f are respectively incremented, and the increment result is obtained as the data number / data storage number / maximum storage set number area 14f. Is overwritten (step S18). As a result, the data storage number m newly set in the data number / data storage number / maximum storage set number area 14f is the same as the data storage number / data storage number / maximum storage set number area 14f. If it does not exceed the number (Max number of sets) (NO in step S19), the input statistical data stored in the input buffer 14b is stored in the statistical data area 14c of the memory 14 (step S20). In the case of statistical calculation, since two pieces of statistical data x and y are input, two storage areas are used in the statistical data area 14c as shown in FIG.

  Thereafter, when data input is continued (step S21 (YES)), the process returns to step S16 to accept the input of the next statistical data. The determination as to whether or not to continue this data input is made, for example, based on the presence or absence of key inputs other than the “0” to “9” (numerical value) keys and the “EXE” (execution) key of the key input unit 12.

  In this way, the operations of steps S16 to S21 are repeated, and as shown in FIG. 3A, when 80 pieces of statistical data are registered in the statistical data area 14c, the next statistical data is input ( When step S16) and calculation of each statistical calculation data (step S17) are performed, the data number n and the data storage number m set in the data number / data storage number / maximum storage group number area 14f in step S18 are as follows. Both are 41. Accordingly, in step S19, the data storage number m newly set in the data number / data storage number / maximum storage group number area 14f is set in the data number / data storage number / maximum storage group number area 14f. It is determined that the maximum number of stored groups (Max group number) has been exceeded (step S19, YES).

  In this case, a message to delete the old data is displayed on the LCD screen 13 (step S22), and the old data from the statistical data area 14c is displayed according to the confirmation input by the user's operation of the key input unit 12. A deletion process is performed (step S23). That is, as shown in FIG. 4, the top data of the statistical data area 14c, that is, the oldest data (one for one-variable statistical calculation, one for two-variable statistical calculation) is deleted, and the data (Step S23a), the data storage number m set in the data count / data storage count / maximum storage set count area 14f is decremented, and the decrement result is obtained as data count / data storage count / maximum storage set count. The area 14f is overwritten (step S23b). As a result, the area of the final data in the statistical data area 14c (one for one-variable statistical calculation and two for two-variable statistical calculation) becomes empty, so that in the next step S20, The input statistical data stored in the input buffer 14b can be registered. As a result, as shown in FIG. 3B, the 41st statistical data x41, y41 can be registered (in the case of two-variable statistical calculation).

  Thereafter, by repeating the processing from step S16 to step S23, old data deletion processing is repeated, and statistical data can be further registered. In this case, the data number n set in the data number / data storage number / maximum storage group number area 14f increases, but the data storage number m is maintained at the maximum storage group number (Max group). . Therefore, if necessary, the number of deleted statistical data can be obtained by nm.

  Thus, when the display of the statistical calculation data is instructed by a predetermined operation of the key input unit 12 by the user, the statistical data input is terminated (step S21 (NO)), and the statistical calculation data is displayed (step S21). In S24 (YES), designation of statistical calculation data to be displayed by a predetermined operation of the user's key input unit 12 is accepted (step S25). Then, the value of the designated statistical calculation data is read from the statistical calculation data area 14e and displayed on the LCD screen 13 (step S26). Thereafter, if it is designated to return to the input of statistical data by a predetermined operation of the key input unit 12 by the user (step S27 (YES)), the process returns to step S21. On the other hand, if it is not designated to return to the input of the statistical data or if the value of the designated statistical calculation data is displayed for a predetermined time (step S27 (NO)), the process returns to the step S25. The specification of statistical calculation data to be displayed by the user is accepted again.

  Further, when display of the input statistical data is instructed by a predetermined operation of the key input unit 12 by the user, the statistical data input is ended (step S21 (NO)), and the statistical calculation data is not displayed (step S24). (NO)) Since the input statistical data is displayed (step S28 (YES)), the statistical data registered in the statistical data area 14c is read and displayed on the LCD screen 13 (step S29). However, in this case, what is displayed is not all the input statistical data but the statistical data of the latest Max number of sets not deleted.

  Here, if it is designated by the predetermined operation of the key input unit 12 by the user to return to the input of statistical data without correcting the input statistical data (step S30 (NO)), or no operation is performed. If a predetermined time has passed without being (step S31 (YES)), the process returns to step S21.

  On the other hand, when the input statistical data is corrected (step S30 (YES)), the input statistical data is corrected by the user's operation of the key input unit 12 (step S32). At this time, the statistical data before and after correction is stored in the input buffer 14b or the like. Then, a calculation for deleting the statistical data before correction from each statistical calculation data stored in the statistical calculation data area 14e is performed (step S33), and a calculation for adding the corrected statistical data to each result is performed. Then, each result is overwritten and stored in the statistical calculation data area 14e (step S34). Thereafter, returning to the step S29, the corrected statistical data is displayed on the LCD screen 13.

For example, if the statistical calculation is the sum Σx regarding the statistical data x, the deletion calculation in step S33 is a process of subtracting the statistical data x before correction from Σx, and the additional calculation in step S34 To the statistical data x ′ after correction. Further, if the statistical calculation is the square sum Σx ² regarding the statistical data x, the deletion calculation in the step S33 is a process of subtracting the square x ² of the statistical data x before correction from the Σx ^2. additional calculations in S34 is a process of adding a ² 'square x' of the results are corrected statistics x.

  As described above, according to the correction of the statistical data, the correction can be reflected in the statistical calculation data by using the statistical data before the correction and the statistical data after the correction.

  On the other hand, when the end of the statistical calculation process is instructed by a predetermined operation of the key input unit 12 by the user, the statistical data input is ended (step S21 (NO)), and the statistical calculation data is not displayed (step S24). (NO)) Without displaying the input statistical data (step S28 (NO)), it is determined that the process is finished (step S35), the statistical calculation process is finished, and the scientific calculator 10 performs another function calculation process. Return to the state where can be implemented.

  FIG. 5 is a diagram illustrating a specific example of the display transition associated with the statistical calculation process of the scientific calculator 10 according to the first embodiment.

  When statistical data is input in steps S16 to S21, the input statistical data is sequentially displayed on the LCD screen 13 as shown in FIG. Here, it is assumed that the LCD screen 13 has only four lines of display area, the capacity of the statistical data area 14c is 80 pieces of statistical data, and two-variable statistical calculation is designated. .

  Accordingly, when the 41st statistical data x and y are input, a message to delete the old statistical data is displayed on the LCD screen 13 as shown in FIG. Although not shown in the flowchart, when the “AC” (clear) key is operated here, the input statistical data and the calculated statistical calculation data are discarded, and the number of data n and the number of stored data m are set. Each can be decremented to return to the state of FIG.

  When deletion is confirmed by operating the “EXE” (execution) key in response to a message to delete old statistical data shown in FIG. 5B, old statistical data is deleted in step S23. In step S20, the 41st statistical data x and y are stored in the free statistical data area 14c, and the LCD screen 13 is displayed as shown in FIG.

  Here, for example, when a cursor movement operation is performed using a cursor key, the process proceeds from step S28 to step S29, and the display of statistical data is scrolled according to the operation. However, since the deleted statistical data cannot be displayed, a display to that effect is displayed on the LCD screen 13 as shown in FIG.

  If it is designated to return to the input of statistical data, or if a predetermined time has passed without any operation, the process proceeds from step S31 to step S21 through step S21, step S24, and step S28. Returning, the displayable statistical data is displayed on the LCD screen 13 as shown in FIG.

  Note that the message display indicating that old data is deleted in step S22 may be displayed only for the first time, the display may be omitted from the second time, and the process may immediately proceed to the old data deletion process in step S23.

  As described above, according to the first embodiment, when trying to register statistical data larger than the capacity of the statistical data area 14c, new statistical data is overwritten on the past statistical data, and is overwritten and deleted. As for statistical data, statistical data can be registered without limitation by calculating necessary statistical value data and storing it in the statistical calculation data area 14e. Therefore, a low-cost scientific calculator with a limited memory capacity can handle more statistical data than can be stored in the memory. The statistical data held in the statistical data area 14c can always be referred to and edited.

  Moreover, since deletion is performed after notifying the user that the statistical data area 14c is full, it is possible to prevent the user from performing deletion unintended.

  One variable statistical calculation and two variable statistical calculation can be selected by the user, and even if one variable statistical calculation is performed by setting the maximum number of stored sets (Max number of sets) according to the selection, two variable statistics It can also be used when performing calculations.

(Second Embodiment)
Since the statistical calculation processing itself of the second embodiment by the scientific calculator 10 is the same as that of the first embodiment, its illustration and description are omitted. However, the second embodiment is different from that of the first embodiment in old data deletion processing during statistical calculation processing.

  FIG. 6 is a detailed flowchart of old data deletion processing during statistical calculation processing of the second embodiment by the scientific calculator 10. FIG. 7 is a diagram for explaining a method of deleting old data during the statistical calculation process of the scientific calculator 10 according to the second embodiment. Hereinafter, as shown in FIG. 7, an example will be described in which two of the student number and the test score are used as variables, and the average score and standard deviation are obtained as statistical calculation data.

  In the process of deleting old data in this embodiment, first, a condition, for example, a deviation value ± 10 is set as a deletion target (step S23A), and the top data of the statistical data area 14c is designated (step S23B).

  If the designated statistical data matches the set condition, that is, if the designated statistical data is to be deleted (step S23C (YES)), the designated data is deleted from the statistical data area 14c and the data is packed. (Step S23D). In other words, the data for which the input statistical data has to be corrected later is erroneous data due to an input error or the like, and is often different in the number of digits or far from other data. Although it is necessary to leave such data that is a singular point, data that is not a singular point is very unlikely to be modified and may be deleted. Therefore, if the set condition is met, the data is not a singular point, so the data is deleted from the statistical data area 14c to increase the free area of the statistical data area 14c.

  Thereafter, the data storage number m set in the data number / data storage number / maximum storage set number area 14f is decremented, and the decrement result is overwritten in the data number / data storage number / maximum storage set number area 14f (step) S23E). If there is next statistical data in the statistical data area 14c (step S23F (YES)), the next statistical data is designated (step S23G), and the process returns to step S23C.

  On the other hand, if the specified statistical data does not match the set condition, that is, if it is not a deletion target (step S23C (NO)), if there is next statistical data in the statistical data area 14c ( Step S23F (YES)), the next statistical data is designated (Step S23G), and the process returns to Step S23C.

  If the processing is completed for all the statistical data registered in the statistical data area 14c, there is no next statistical data in the statistical data area 14c (step S23F (NO)), and the old data is deleted. Processing will be terminated. However, if there is no statistical data that could be deleted (step S23H (YES)), no more statistical data can be input anymore, and the process proceeds to an error display process.

  Although the deviation value is ± 10 as the condition here, it is needless to say that other conditions such as an average score of ± 20 or a two-digit score can be specified.

  Moreover, although the case where the student number and the score of the test are two variables as the statistical data has been described as an example, other statistical data may be used. A condition for deleting data that is not a singular point may be appropriately set according to the contents of the statistical data.

  As described above, according to the second embodiment, the same effect as in the first embodiment can be obtained.

  Furthermore, in the second embodiment, statistical data registration can be continued while leaving only characteristic values that may be erroneously input, and even if there is an erroneous input, the user can find and correct it.

  The operation methods by the scientific calculator 10 described in the above embodiments, that is, the statistical calculation processing shown in the flowcharts of FIGS. 2A and 2B and the old data deletion processing shown in the flowcharts of FIGS. As a program that can be executed by a computer, a storage medium 20 such as a memory card (ROM card, RAM card, etc.), magnetic disk (floppy disk, hard disk, etc.), optical disk (CD-ROM, DVD, etc.), semiconductor memory, etc. Can be stored and distributed. Then, the computer (11) of the electronic computer (10) reads the program stored in the storage medium 20 into the memory 14, and the operation is controlled by the read program, so that it has been described in each embodiment. A statistical calculation (and deletion of old data) function can be realized, and the same processing as described above can be executed.

  The program data for realizing each of the above methods can be transmitted on a communication network (public line) in the form of a program code, and the program data is electronically transmitted by a communication device connected to the communication network. It is also possible to implement the above-described statistical calculation (and deletion of old data) function by taking in the computer (11) of the computer (10).

  Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention at the stage of implementation. Further, each of the embodiments includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in each embodiment or some constituent elements are combined in different forms, the problems described in the column of the problem to be solved by the invention If the effects described in the column “Effects of the Invention” can be obtained, a configuration in which these constituent requirements are deleted or combined can be extracted as an invention.

10 ... scientific calculator 11 ... control unit (CPU)
DESCRIPTION OF SYMBOLS 12 ... Key input part 13 ... Liquid crystal (LCD) screen 14 ... Memory 14a ... Statistical calculation program 14b ... Input buffer 14c ... Statistical data area 14d ... Designated statistical kind area 14e ... Statistical calculation data area 14f ... Maximum storage group number area 15 ... Storage medium reading unit 20 ... Storage medium

Claims (4)

Statistical data input means for inputting a plurality of sets of statistical data;
Statistical data storage means for storing a plurality of sets of statistical data input by the statistical data input means up to a predetermined area;
Statistical calculation means for calculating a statistical calculation value by calculating a plurality of sets of statistical data stored by the statistical data storage means;
With
A setting means for setting a condition that should be determined not to be erroneous statistical data input due to an input error in the calculated statistical data set;
After the statistical data storage means stores the set of statistical data up to the predetermined area, the statistical data set is newly inputted by the statistical data input means, and the statistical data already calculated by the statistical calculation means Statistical data for deleting statistical data satisfying the conditions set by the setting means from the statistical data storage means and storing the newly input statistical data sets in the statistical data storage means Update means;
Statistical data correction means for displaying and correcting a set of statistical data calculated by the statistical calculation means other than those deleted by the statistical data update means, stored in the statistical data storage means,
Statistical recalculation means for calculating a statistical calculation value by performing recalculation using the statistical data set corrected by the statistical data correction means,
A statistical calculation apparatus further comprising:   The statistical data update means has notification means for notifying that at least a part of a set of statistical data calculated by the statistical calculation means is deleted from the statistical data storage means, and the deletion is performed by the notification means. 2. The statistical calculation apparatus according to claim 1, wherein at least a part of the calculated set of statistical data from the statistical data storage unit is deleted after the notification is made. As the statistical calculation by the statistical calculation means, further comprises statistical calculation selection means for selecting a user to perform either one-variable statistical calculation or two-variable statistical calculation,
When univariate statistical calculation is selected by this statistical calculation selection means,
The statistical data input means inputs one statistical data as a set of statistical data,
The statistical data update means deletes at least one calculated statistical data from the statistical data storage means as at least part of the set of calculated statistical data,
When bivariate statistical calculation is selected by the statistical calculation selection means,
The statistical data input means inputs two statistical data as a set of statistical data,
The statistical data update means deletes at least two calculated statistical data from the statistical data storage means as at least part of the set of calculated statistical data.
The statistical calculation apparatus according to claim 1 or 2, characterized in that: A computer readable program for controlling a computer of an electronic device,
The computer,
Statistical data input means for inputting multiple sets of statistical data,
Statistical data storage means for storing a plurality of sets of statistical data input by the statistical data input means up to a predetermined area;
Statistical calculation means for calculating a statistical calculation value by calculating a plurality of sets of statistical data stored by the statistical data storage means,
Setting means for setting a condition that should be determined not to be erroneous statistical data input due to an input error among the set of calculated statistical data,
After the statistical data storage means stores the set of statistical data up to the predetermined area, the statistical data set is newly inputted by the statistical data input means, and the statistical data already calculated by the statistical calculation means Statistical data for deleting statistical data satisfying the conditions set by the setting means from the statistical data storage means and storing the newly input statistical data sets in the statistical data storage means Update means,
Statistical data correction means for displaying and correcting a set of statistical data calculated by the statistical calculation means other than those deleted by the statistical data update means, stored in the statistical data storage means,
Statistical recalculation means for calculating a statistical calculation value by performing recalculation using a set of statistical data corrected by the statistical data correction means,
A computer-readable program designed to function as a computer.

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