A new type of demonstration device for the fitting degree of mathematical probability and statistical principles

Abstract

The invention belongs to the technical field of mathematics teaching equipment, and discloses a novel mathematical probability statistics principle fitting degree demonstration device. A control panel and control buttons are embedded in the right end of the bottom plate, the bottom plate is connected with a fixed round table through a suction cup, and the upper end of the fixed round table is fixed by bolts. Support telescopic rod; the support telescopic rod is provided with an outer sleeve, the outer sleeve is sleeved with an inner rod, and the outer sleeve is opened with a through hole, the inner rod is connected to the button through a spring, and the button is clamped inside the through hole; the upper end of the support telescopic rod Through the bolts and the display screen, an anti-slip protective film is pasted on the display screen, and the anti-slip protective film is depicted with a cross grid; the anti-slip protective film can be pasted with a circular plate, and the display screen is provided with a bar graph display area. The present invention is provided with a circular plate and a cross grid on the display screen, and can mark special points in the graph according to the graph drawn by the system, so as to facilitate the demonstration of the fitting degree.

Description

technical field [0001] The invention belongs to the technical field of mathematics teaching equipment, and in particular relates to a novel mathematical probability statistics principle fitting degree demonstration device. Background technique [0002] At present, when teaching the theory of probability and statistics, mathematics teachers usually need to carry out corresponding experimental operations in the classroom to verify the relevant theorems of the theory of probability and statistics, and demonstrate the fitting degree of the experimental results. The fit demonstration experiment is not easy to demonstrate to students, and usually the experimental results cannot be displayed vividly. In order to solve the above-mentioned problems, the demonstration device of the degree of fit of the principles of mathematical probability and statistics plays a very important role. However, during the fitting degree demonstration process of the existing mathematical probability and...

AI Technical Summary

Problems solved by technology

[0004] (1) During the fitting degree demonstration process of the existing mathematical probability and statistics principle fitting degree demonstration device, the special point in the curve is marked by the thickening of the special point, which reduces the intuition of the fitting degree demonstration

[0005] (2) During the fitting degree demonstration process of the existing mathematical probability statistics principle fitting degree demonstration device, because the height of the display screen cannot be adjusted, it leads to long-term viewing, which increases the soreness of the neck

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