高考数学正态分布复习.ppt

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1、(选修Ⅱ)第一章概率与统计1.5正态分布⑴正态分布⑵正态曲线⑶标准正态曲线点数和23456789101112频数2034075918059941218989813602381197频率0.0280.0570.0820.1120.1380.1690.1370.1130.0840.0530.02723456789101112点数和频率1362363364365366361.频率分布的条形图每一个小矩形的高就是对应的频率离散型总体复习引入25.3925.3625.3425.4225.4525.3825.3925.4225.4725.3525.4125.43

2、25.4425.4825.4525.4325.4625.4025.5125.4525.4025.3925.4125.3625.3825.3125.5625.4325.4025.3825.3725.4425.3325.4625.4025.4925.3425.4225.5025.3725.3525.3225.4525.4025.2725.4325.5425.3925.4525.4325.4025.4325.4425.4125.5325.3725.3825.2425.4425.4025.3625.4225.3925.4625.3825.3525.3125.

3、3425.4025.3625.4125.3225.3825.4225.4025.3325.3725.4125.4925.3525.4725.3425.3025.3925.3625.4625.2925.4025.3725.3325.4025.3525.4125.3725.4725.3925.4225.4725.3825.39从规定尺寸为25.40mm的一堆产品中任取100件，测得它们的实际尺寸如下：2.频率分布直方图频率分布表：复习引入25.3925.3625.3425.4225.4525.3825.3925.4225.4725.3525.4125.4

4、325.4425.4825.4525.4325.4625.4025.5125.4525.4025.3925.4125.3625.3825.3125.5625.4325.4025.3825.3725.4425.3325.4625.4025.4925.3425.4225.5025.3725.3525.3225.4525.4025.2725.4325.5425.3925.4525.4325.4025.4325.4425.4125.5325.3725.3825.2425.4425.4025.3625.4225.3925.4625.3825.3525.3125

5、.3425.4025.3625.4125.3225.3825.4225.4025.3325.3725.4125.4925.3525.4725.3425.3025.3925.3625.4625.2925.4025.3725.3325.4025.3525.4125.3725.4725.3925.4225.4725.3825.39从规定尺寸为25.40mm的一堆产品中任取100件，测得它们的实际尺寸如下：3.频率分布折线图频率分布表：复习引入25.3925.3625.3425.4225.4525.3825.3925.4225.4725.3525.4125.

6、4325.4425.4825.4525.4325.4625.4025.5125.4525.4025.3925.4125.3625.3825.3125.5625.4325.4025.3825.3725.4425.3325.4625.4025.4925.3425.4225.5025.3725.3525.3225.4525.4025.2725.4325.5425.3925.4525.4325.4025.4325.4425.4125.5325.3725.3825.2425.4425.4025.3625.4225.3925.4625.3825.3525.312

7、5.3425.4025.3625.4125.3225.3825.4225.4025.3325.3725.4125.4925.3525.4725.3425.3025.3925.3625.4625.2925.4025.3725.3325.4025.3525.4125.3725.4725.3925.4225.4725.3825.39从规定尺寸为25.40mm的一堆产品中任取100件，测得它们的实际尺寸如下：频率分布表：总体密度曲线与x轴围成的面积为1.频率分布折线图无限接近于一条光滑曲线.4.总体密度曲线复习引入总体密度曲线的函数表达式记为：y=f(x)5

8、.总体密度曲线函数复习引入6.正态分布与正态曲线观看正态曲线的变化情况观看正态曲线的变化情况新授内容7.正态