2018_2019学年九年级数学下册第28章样本与总体28.1抽样调查的意义28.1.2这样选择样本合适吗导学课件(新版)华东师大版.ppt

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第二十八章 样本与总体,281 抽样调查的意义,281 2 这样选择样本合适吗,知识目标,目标突破,总结反思,第二十八章 样本与总体,知识目标,28.2.2 这样选择样本合适吗,目标一 会判断所选样本是否合适,D,28.2.2 这样选择样本合适吗,目标突破,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,目标二 能合理选取样本,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,28.2.2 这样选择样本合适吗,总结反思,知识点 选择具有代表性的样本,小结,26.1 二次函数,反思,26.1 二次函数,

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