2019年春八年级数学下册第20章数据的初步分析20.2数据的集中趋势与离散程度20.2.2第1课时方差课件(新版)沪科版.pptx

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第20章 数据的初步分析,20.2.2 第1课时 方差,20.2.2 第1课时 方差,目标突破,总结反思,第20章 数据的初步分析,知识目标,知识目标,20.2.2 第1课时 方差,目标突破,目标一 能根据方差判断一组数据的稳定性,20.2.2 第1课时 方差,B,20.2.2 第1课时 方差,目标二 会求一组数据的方差,并能利用方差解决实际问题,20.2.2 第1课时 方差,8,20.2.2 第1课时 方差,20.2.2 第1课时 方差,20.2.2 第1课时 方差,20.2.2 第1课时 方差,总结反思,知识点一 方差的定义,20.2.2 第1课时 方差,知识点二 方差的意义,20.2.2 第1课时 方差,离散程度,越大,20.2.2 第1课时 方差,20.2.2 第1课时 方差,

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