CN212010025U - Statistical probability event demonstration device - Google Patents
Statistical probability event demonstration device Download PDFInfo
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- CN212010025U CN212010025U CN201922348792.2U CN201922348792U CN212010025U CN 212010025 U CN212010025 U CN 212010025U CN 201922348792 U CN201922348792 U CN 201922348792U CN 212010025 U CN212010025 U CN 212010025U
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- probability
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- presentation device
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Abstract
The utility model relates to a statistics class probability incident presentation device, including main part, bracing piece and base, the main part is including holding chamber and probability process chamber, hold chamber and probability process chamber and form hourglass column structure, this presentation device can reflect the result that adds up that a large amount of random events produced under certain condition directly perceivedly, arouses student's curiosity and interest fast, provides actual inspection for theoretical course.
Description
Technical Field
The utility model relates to a teaching demonstration field especially relates to a statistics class probability event presentation device.
Background
Probability theory is a mathematical branch for researching random phenomenon quantity rule, in the teaching of probability theory, students often cannot form a more visual concept to probability due to the abstraction of knowledge, so that a teaching instrument is needed to demonstrate the probability distribution or the forming process of the probability distribution, the students can visually understand the probability distribution, and a better teaching effect is achieved. The probability demonstrator is used for geometrically distributing probability, combining mechanical or other knowledge, demonstrating the forming process of probability distribution, and simulating and observing the final distribution result.
Random phenomena are relative to deterministic phenomena. The realization of the stochastic phenomenon and the observation of it is called stochastic experimentation. Each possible outcome of a random trial is referred to as a base event, and one or a group of base events are collectively referred to as random events, or simply events. Typical random trials are craps, coins, poker, roulette, and the like.
However, the above-mentioned principles are very obscure and unintelligible in conceptual explanation, cannot be intuitively and significantly recognized, and cannot mobilize the curiosity and enthusiasm of students.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, provide one kind and can reflect the teaching tool of the accumulation result that a large amount of random events produced under certain condition directly perceivedly, the utility model relates to a statistics class probability incident presentation device.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize: a statistical probability event demonstration device comprises a main body, a supporting rod and a base, wherein the main body comprises a containing cavity and a probability processing cavity, the containing cavity and the probability processing cavity form a hourglass-shaped structure, demonstration balls are contained in the containing cavity, a diversion column is arranged inside the probability processing cavity, the diversion column transversely penetrates through the probability processing cavity, and a flashboard is arranged between the containing cavity and the probability processing cavity;
a result processing device is arranged below the probability processing cavity, the upper end of the result processing device is correspondingly sleeved on a cover-shaped body at the lower end of the probability processing cavity, and an accumulation cavity corresponding to any two flow dividing columns at the lowest part is horizontally distributed in parallel in the result processing device;
the base top has vertically linked firmly the bracing piece, the main part back is stretched out to have the pivot correspondence to articulate on the bracing piece top, and the bracing piece top is equipped with the mounting hole that corresponds the pivot, and the mounting hole below is equipped with the bar hole that vertically extends to the mounting hole, the pivot both sides are equipped with the breach in corresponding bar hole.
Preferably, the shunt columns are distributed in the probability processing cavity in an equilateral triangle shape in a staggered mode, and the gap between every two adjacent shunt columns is matched with the outer diameter of the demonstration ball. The upper end of the containing cavity is provided with a sealing plate.
Preferably, hold the mounting hole that is equipped with horizontal setting between chamber and the probability processing chamber, the flashboard stretches into the mounting hole and keeps apart holding chamber and probability processing chamber.
Preferably, a display device is arranged on the other side of the base, and the display device is an integrated computer. Pile up the chamber bottom and be equipped with weight induction system, weight induction system corresponds through integrated circuit and connects on the integral type computer. And a data line transmission plug corresponding to the integrated circuit is arranged at the bottom of the result processing device and is correspondingly connected to the integrated computer. The main body is made of transparent material.
The beneficial technical effects are as follows: the demonstration device can intuitively reflect the accumulated results of a large number of random events under certain conditions, quickly arouse the curiosity and interest of students and provide practical examination for theoretical courses.
Drawings
FIG. 1 is a schematic view of the structure of the device;
FIG. 2 is a schematic view of a support rod;
fig. 3 is a schematic view of the structure of the rotating shaft.
In the figure, a containing cavity 1, a probability processing cavity 2, a flow dividing column 3, a flashboard 4, a piling cavity 5, a weight sensing device 6, a base 7, a supporting rod 8, an integrated computer 9 and a rotating shaft 10 are arranged.
Detailed Description
A statistical class probability event demonstration device, see fig. 1-3: the demonstration device comprises a main body, a support rod 8 and a base 7, wherein the main body comprises a containing cavity 1 and a probability processing cavity 2, the containing cavity 1 and the probability processing cavity 2 form a hourglass-shaped structure, demonstration balls are contained in the containing cavity 1, a distribution column 3 is arranged inside the probability processing cavity 2, the distribution column 3 transversely penetrates through the probability processing cavity 2, and a flashboard 4 is arranged between the containing cavity 1 and the probability processing cavity 2;
a result processing device is arranged below the probability processing cavity 2, the upper end of the result processing device is correspondingly sleeved on a cover-shaped body at the lower end of the probability processing cavity 2, and an accumulation cavity 5 corresponding to any two shunt columns 3 at the lowest part is horizontally distributed in parallel in the result processing device;
the bracing piece 8 has vertically been linked firmly in 7 tops of base, the main part back is stretched out and is had pivot 10 correspondence to articulate on 8 tops of bracing piece, and 8 tops of bracing piece are equipped with the mounting hole that corresponds pivot 10, and the mounting hole below is equipped with the bar hole that vertically extends to the mounting hole, 10 both sides of pivot are equipped with the breach in corresponding bar hole.
Set up the breach on the pivot 10, the experiment finishes the back, upwards holds up the main part and carries out 180 degrees rotations realization demonstration balls's reduction, sets up flashboard 4, can block demonstration balls.
The mounting hole downside sets up the bar hole, and the main part is rotatory to be reset back pivot 10 and can be followed bar hole downward displacement through breach department, guarantees that the main part lower extreme is contradicted on base 7, can improve the stability of this device in the use.
The demonstration device can intuitively reflect the accumulated results of a large number of random events under certain conditions, quickly arouse the curiosity and interest of students and provide practical examination for theoretical courses.
The shunt columns 3 are distributed in the probability processing cavity 2 in an equilateral triangle shape in a staggered mode, and gaps between every two adjacent shunt columns 3 are matched with the outer diameter of the demonstration ball. The upper end of the containing cavity 1 is provided with a sealing plate.
Hold and be equipped with the mounting hole of horizontal setting between chamber 1 and the probability processing chamber 2, flashboard 4 stretches into the mounting hole to holding chamber 1 and probability processing chamber 2 and keep apart.
And a display device is arranged on the other side of the base 7, and the display device is an integrated computer 9. Pile up the chamber 5 bottom and be equipped with weight induction system 6, weight induction system 6 corresponds the connection on integral type computer 9 through integrated circuit. And a data line transmission plug corresponding to the integrated circuit is arranged at the bottom of the result processing device and is correspondingly connected to the integrated computer 9. Weight induction system 6 can pass through the form of data with demonstration ball quantity and convert gravity signal into between, sets up integral type computer 9, carries out statistics's record and storage on the computer through weight induction system 6, can demonstrate the statistical mean many times.
Claims (7)
1. The utility model provides a statistics class probability event presentation device, includes main part, bracing piece and base, characterized by: the main body comprises a containing cavity and a probability processing cavity, the containing cavity and the probability processing cavity form a hourglass-shaped structure, a demonstration ball is contained in the containing cavity, a diversion column is arranged in the probability processing cavity and transversely penetrates through the probability processing cavity, and a flashboard is arranged between the containing cavity and the probability processing cavity;
a result processing device is arranged below the probability processing cavity, the upper end of the result processing device is correspondingly sleeved on a cover-shaped body at the lower end of the probability processing cavity, and an accumulation cavity corresponding to any two flow dividing columns at the lowest part is horizontally distributed in parallel in the result processing device;
the base top has vertically linked firmly the bracing piece, the main part back is stretched out to have the pivot correspondence to articulate on the bracing piece top, and the bracing piece top is equipped with the mounting hole that corresponds the pivot, and the mounting hole below is equipped with the bar hole that vertically extends to the mounting hole, the pivot both sides are equipped with the breach in corresponding bar hole.
2. The statistical class probabilistic event presentation device of claim 1, wherein: the flow-dividing columns are distributed in the probability processing cavity in an equilateral triangle shape in a staggered mode, and gaps between every two adjacent flow-dividing columns are matched with the outer diameter of the demonstration ball.
3. The statistical class probabilistic event presentation device of claim 1, wherein: the upper end of the containing cavity is provided with a sealing plate.
4. The statistical class probabilistic event presentation device of claim 1, wherein: hold the mounting hole that is equipped with horizontal setting between chamber and the probability processing chamber, the flashboard stretches into the mounting hole to holding chamber and probability processing chamber and keep apart.
5. The statistical class probabilistic event presentation device of claim 1, wherein: and a display device is arranged on the other side of the base and is an integrated computer.
6. The statistical class probabilistic event presentation device of claim 5, wherein: pile up the chamber bottom and be equipped with weight induction system, weight induction system corresponds through integrated circuit and connects on the integral type computer.
7. The statistical class probabilistic event presentation device of claim 6, wherein: and a data line transmission plug corresponding to the integrated circuit is arranged at the bottom of the result processing device and is correspondingly connected to the integrated computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348792.2U CN212010025U (en) | 2019-12-24 | 2019-12-24 | Statistical probability event demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922348792.2U CN212010025U (en) | 2019-12-24 | 2019-12-24 | Statistical probability event demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212010025U true CN212010025U (en) | 2020-11-24 |
Family
ID=73409000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922348792.2U Expired - Fee Related CN212010025U (en) | 2019-12-24 | 2019-12-24 | Statistical probability event demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212010025U (en) |
-
2019
- 2019-12-24 CN CN201922348792.2U patent/CN212010025U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 Termination date: 20211224 |