Applied mathematics probability statistics device

Abstract

The invention provides an applied mathematics probability statistics device. The device comprises a box body, a glass side plate, an arc-shaped pipe, an ejection cylinder and counting plates, the boxbody is a semi-closed box with an opening formed in the side face. An arc-shaped pipe is fixed to the center of the top end of the box. The side end of the arc-shaped pipe is fixed at the side end ofthe box body; an ejection cylinder is fixed at the other end of the arc-shaped pipe; an elastic roller is arranged at the middle upper part in the box body; a plurality of baffles at equal intervals are fixed in the box body and close to the bottom of the box body; the counting plate is fixed below each marble channel in the box body; a flow guide plate is also fixed on the inner bottom surface ofthe box body; the problems that in the using process of an existing operating device, an operator cannot visually observe the elastic force during marble ejection, meanwhile, in the falling process,a marble on a counting piece on the inner side possibly triggers a counting piece close to the outer side to count in the falling process, and the structural accuracy of probability statistics is affected are solved.

Description

technical field [0001] The invention belongs to the technical field of mathematics teaching tools, and in particular relates to an applied mathematics probability statistics device. Background technique [0002] Probability statistics is a mathematical method for studying the statistical laws of random phenomena in nature, called probability statistics, also known as mathematical statistics methods. The main research objects of probability and statistics are random events, random variables and random processes. Probability, also known as probability rate, chance rate, probability or possibility, is a basic concept of probability theory. Probability is a measure of the possibility of a random event. Generally, a real number between 0 and 1 represents the possibility of an event occurring. In the teaching of probability and statistics, in order to facilitate the intuitive understanding of the concept of probability, some Random probability teaching aids are used to assist th...

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Problems solved by technology

[0004] However, during use, the operator cannot intuitively observe the elastic force when the marbles are ejected. At the same time, during the falling process, the marbles on the inner counting pieces may trigger the counting of the outer counting pieces, which affects the probability. The accuracy of the statistical structure is not conducive to teaching use

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