2019年春八年级数学下册第20章数据的整理与初步处理20.3数据的离散程度课件(新版)华东师大版.pptx

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第20章 数据的整理与初步处理,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,目标突破,总结反思,第20章 数据的整理与初步处理,知识目标,知识目标,20.3 1方差 2用计算器求方差,目标突破,目标一 会计算一组数据的方差,20.3 1方差 2用计算器求方差,B,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,目标二 能够用方差解决实际问题,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,目标三 掌握用计算器求一组数据方差的方法,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,总结反思,知识点一 方差,20.3 1方差 2用计算器求方差,各个数据,平均数,20.3 1方差 2用计算器求方差,越大,越小,20.3 1方差 2用计算器求方差,知识点二 用计算器求方差的按键顺序及注意事项,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,20.3 1方差 2用计算器求方差,

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