CN202976595U - Normal probability distribution demonstrator - Google Patents
Normal probability distribution demonstrator Download PDFInfo
- Publication number
- CN202976595U CN202976595U CN 201220704817 CN201220704817U CN202976595U CN 202976595 U CN202976595 U CN 202976595U CN 201220704817 CN201220704817 CN 201220704817 CN 201220704817 U CN201220704817 U CN 201220704817U CN 202976595 U CN202976595 U CN 202976595U
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- China
- Prior art keywords
- ball
- probability distribution
- normal probability
- demonstration board
- receiving
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Abstract
The utility model provides a normal probability distribution demonstrator. Probability often happens in daily life and work, but in a teaching process, the normal probability distribution cannot be expressed clearly in visual form by language, thus, a demonstration device is needed. The normal probability distribution demonstrator is composed of a demonstration board (3), the demonstration board is fixed on a wall by a screw (5), a ball barrel (2) is mounted at the middle part of the upper part of the demonstration board, small balls are contained in the ball barrel, the ball barrel is fixed on the demonstration board through a connection board (1), n layers of hexagonal prisms (4) are arranged under the ball barrel in triangular form, each two neighboring hexagonal prisms keeps equal interval so as to form a cellular structure, a group of ball catching tubes (6) are mounted under the hexagonal prisms at the final layer, the ball catching tubes are respectively located between each two neighboring hexagonal prisms, and a ball collection box (7) is arranged under the ball catching tubes. The normal probability distribution demonstrator is used in the teaching field.
Description
technical field:
the utility model relates to a kind of just too probability distribution demonstration device.
background technology:
probability usually can run in our live and work, and especially the probability distribution of some variablees is similar to Normal probability distribution, but this normal distribution can't express clearly intuitively with language in teaching process, and this just needs a kind of apparatus for demonstrating.
summary of the invention:
the purpose of this utility model is to provide a kind of Normal probability distribution demonstration device for the problems referred to above, and abstract problem is expressed very intuitively.
above-mentioned purpose realizes by following technical scheme:
a kind of Normal probability distribution demonstration device, its composition comprises: demonstration board, described demonstration board is screwed on metope, in described demonstration board upper middle position, a ball cylinder is housed, in described ball bucket, bead is housed, described ball cylinder is fixed on described demonstration board through web joint, press fixedly n layer six prism of triangular arrangement below described ball cylinder, described adjacent two six prism spacings equate to form honeycomb, one group of pipe of receiving in the end is installed below described six prisms of one deck, the described pipe of receiving is between adjacent two described six prisms, dress ball box is arranged below the described pipe of receiving.
described Normal probability distribution demonstration device, described ball cylinder is infundibulate, in described ball cylinder bottom, has the switch mouth, and the described pipe of receiving is for transparent cylinder shape, and described dress ball box is rectangle, and described dress ball box one end is equipped with handle.
beneficial effect:
1. the six prism smooth-sided compression candles that the utility model adopts, bead by the time do not have large friction, therefore can not affect the normal distribution situation.
2. six prisms that the utility model adopts are arranged the honeycomb formed, and form a front, can see very intuitively motion and the Normal probability distribution situation of bead, abstract theoretical visualize, are applicable to very much teaching.
3. the pipe of receiving that the utility model adopts, for transparent cylinder shape, directly can be found out the bead quantity of each pipe of receiving, and the Normal probability distribution situation is high-visible, has increased the interest of Students ' Learning probability.
4. the dress ball box that the utility model adopts is rectangle, is provided with handle, can pull out dress ball box after having tested and check nodule number, and the calculating probability distribution situation, both convenient and reliable.
the accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present utility model.
accompanying drawing 2 is bead movement locus figure of accompanying drawing 1.
accompanying drawing 3 is accompanying drawing 1 dress ball box signal maps.
accompanying drawing 4 is test distribution plans of the present utility model.
embodiment:
embodiment 1:
a kind of Normal probability distribution demonstration device, its composition comprises: demonstration board 3, described demonstration board is fixed on metope with screw 5, in described demonstration board upper middle position, a ball cylinder 2 is housed, in described ball bucket, bead is housed, described ball cylinder is fixed on described demonstration board through web joint 1, press fixedly n layer six prism 4 of triangular arrangement below described ball cylinder, described adjacent two six prism spacings equate to form honeycomb, one group of pipe 6 of receiving in the end is installed below described six prisms of one deck, the described pipe of receiving is between adjacent two described six prisms, dress ball box 7 is arranged below the described pipe of receiving.
embodiment 2:
described Normal probability distribution demonstration device, described ball cylinder is infundibulate, in described ball cylinder bottom, has the switch mouth, and the described pipe of receiving is for transparent cylinder shape, and described dress ball box is rectangle, and described dress ball box one end is equipped with handle.
Claims (2)
1. a Normal probability distribution demonstration device, its composition comprises: demonstration board, it is characterized in that: described demonstration board is screwed on metope, in described demonstration board upper middle position, a ball cylinder is housed, in described ball bucket, bead is housed, described ball cylinder is fixed on described demonstration board through web joint, press fixedly n layer six prism of triangular arrangement below described ball cylinder, described adjacent two six prism spacings equate to form honeycomb, one group of pipe of receiving in the end is installed below described six prisms of one deck, the described pipe of receiving is between adjacent two described six prisms, dress ball box is arranged below the described pipe of receiving.
2. Normal probability distribution demonstration device according to claim 1, it is characterized in that: described ball cylinder is infundibulate, in described ball cylinder bottom, has the switch mouth, and the described pipe of receiving is for transparent cylinder shape, described dress ball box is rectangle, and described dress ball box one end is equipped with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704817 CN202976595U (en) | 2012-12-19 | 2012-12-19 | Normal probability distribution demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704817 CN202976595U (en) | 2012-12-19 | 2012-12-19 | Normal probability distribution demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976595U true CN202976595U (en) | 2013-06-05 |
Family
ID=48517640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220704817 Expired - Fee Related CN202976595U (en) | 2012-12-19 | 2012-12-19 | Normal probability distribution demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202976595U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106846995A (en) * | 2017-04-11 | 2017-06-13 | 张馨之 | Stochastic finite element demonstration teaching aid |
| CN106981239A (en) * | 2017-01-24 | 2017-07-25 | 潍坊科技学院 | Mathematical statistics is distributed demo system |
| CN108182851A (en) * | 2018-02-09 | 2018-06-19 | 钦州学院 | A kind of normal distribution probability demonstration device |
| CN108735050A (en) * | 2018-05-25 | 2018-11-02 | 韩翔凌 | A kind of College Maths probability event teaching demonstration device |
| CN109859579A (en) * | 2019-03-20 | 2019-06-07 | 宿州市鑫尧健康科技有限公司 | A kind of mathematical probabilities class teaching aid equipment |
| CN109903649A (en) * | 2019-04-17 | 2019-06-18 | 德州学院 | A kind of College Maths probability event teaching demonstration device based on big data analysis |
| CN110634359A (en) * | 2019-10-20 | 2019-12-31 | 邯郸学院 | Mathematical statistics distribution demonstrator |
| CN111312032A (en) * | 2020-02-19 | 2020-06-19 | 吉林化工学院 | Probability statistics distribution teaching presentation device |
-
2012
- 2012-12-19 CN CN 201220704817 patent/CN202976595U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981239A (en) * | 2017-01-24 | 2017-07-25 | 潍坊科技学院 | Mathematical statistics is distributed demo system |
| CN106846995A (en) * | 2017-04-11 | 2017-06-13 | 张馨之 | Stochastic finite element demonstration teaching aid |
| CN108182851A (en) * | 2018-02-09 | 2018-06-19 | 钦州学院 | A kind of normal distribution probability demonstration device |
| CN108735050A (en) * | 2018-05-25 | 2018-11-02 | 韩翔凌 | A kind of College Maths probability event teaching demonstration device |
| CN109859579A (en) * | 2019-03-20 | 2019-06-07 | 宿州市鑫尧健康科技有限公司 | A kind of mathematical probabilities class teaching aid equipment |
| CN109859579B (en) * | 2019-03-20 | 2020-11-27 | 宿州市鑫尧健康科技有限公司 | Mathematics probability class is with supplementary teaching equipment |
| CN109903649A (en) * | 2019-04-17 | 2019-06-18 | 德州学院 | A kind of College Maths probability event teaching demonstration device based on big data analysis |
| CN110634359A (en) * | 2019-10-20 | 2019-12-31 | 邯郸学院 | Mathematical statistics distribution demonstrator |
| CN111312032A (en) * | 2020-02-19 | 2020-06-19 | 吉林化工学院 | Probability statistics distribution teaching presentation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |