CN204178601U - 数理统计学正态分布演示教具 - Google Patents

数理统计学正态分布演示教具 Download PDF

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CN204178601U
CN204178601U CN201420695843.3U CN201420695843U CN204178601U CN 204178601 U CN204178601 U CN 204178601U CN 201420695843 U CN201420695843 U CN 201420695843U CN 204178601 U CN204178601 U CN 204178601U
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冯婉霞
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Harbin Institute of Physical Education
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Harbin Institute of Physical Education
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Abstract

数理统计学正态分布演示教具。传统的统计学很难让学生接受和理解,因为其很抽象,不好演示,不直观。一种数理统计学正态分布演示教具,其组成包括:底板( 1 ),所述的底板上安装有一组钉子( 4 ),所述的钉子为等腰梯形排列,所述的底板上装有两个导板( 2 ),所述的底板上安装有一组隔板( 5 ),所述的底板下与透明塑料罩( 7 )连接,所述的透明塑料罩与所述的隔板等高,所述的隔板内有一组小球。本实用新型在数理统计学中使用。

Description

数理统计学正态分布演示教具
技术领域:
本实用新型涉及一种数理统计学正态分布演示教具。
背景技术:
传统的统计学很难让学生接受和理解,因为其很抽象,不好演示,不直观。
实用新型内容:
上述的目的通过以下的技术方案实现:
一种数理统计学正态分布演示教具,其组成包括:底板,所述的底板上安装有一组钉子,所述的钉子为等腰梯形排列,所述的底板上装有两个导板,所述的底板上安装有一组隔板,所述的底板下与透明塑料罩连接,所述的透明塑料罩与所述的隔板等高,所述的隔板内有一组小球。
有益效果:
1. 本实用新型是在一个底板上钉上一组按等腰梯型排列的钉子,钉子是从下往上钉,每上一排少一个钉子,逐步往上钉的,底板下是一组隔板,作实验时从导板口放入一个可以穿过钉子缝隙的小球,让它自由落下,在落下的过程中,当小球碰到下一排钉子时,它向左落下和向右落下的的可能性都是百分之五十,但如果大量放入小球,经过多次实验,到最后所完成的曲线几乎是一样的,中间最高,两边对称的逐渐减少,这条曲线就是正态分布曲线,通过这个实验让学生总结出生活中很多随机事件都有一个共同的特点,虽然受到很多因素的影响,只要因素影响不大,那最后的结果都遵循与上面实验类似的规律,易于学生观察,教学效率高。
附图说明:
附图1是本实用新型的结构示意图。
具体实施方式:
实施例1:
一种数理统计学正态分布演示教具,其组成包括:底板1,所述的底板上安装有一组钉子4,所述的钉子为等腰梯形排列,所述的底板上装有两个导板2,所述的底板上安装有一组隔板5,所述的底板下与透明塑料罩7连接,所述的透明塑料罩与所述的隔板等高,所述的隔板内有一组小球。

Claims (1)

1.一种数理统计学正态分布演示教具,其组成包括:底板,其特征是:所述的底板上安装有一组钉子,所述的钉子为等腰梯形排列,所述的底板上装有两个导板,所述的底板上安装有一组隔板,所述的底板下与透明塑料罩连接,所述的透明塑料罩与所述的隔板等高,所述的隔板内有一组小球。
CN201420695843.3U 2014-11-19 2014-11-19 数理统计学正态分布演示教具 Expired - Fee Related CN204178601U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106981239A (zh) * 2017-01-24 2017-07-25 潍坊科技学院 数理统计学分布演示系统
CN109035881A (zh) * 2018-07-31 2018-12-18 深圳点猫科技有限公司 一种学科教育互动方法及电子设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106981239A (zh) * 2017-01-24 2017-07-25 潍坊科技学院 数理统计学分布演示系统
CN109035881A (zh) * 2018-07-31 2018-12-18 深圳点猫科技有限公司 一种学科教育互动方法及电子设备

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Termination date: 20191119