云南省2019年中考数学总复习第八单元统计与概率第27课时统计课件.ppt

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UNIT EIGHT,第 27 课时 统计,第八单元 统计与概率,考点一 全面调查与抽样调查,考点聚焦,所有,部分,2.总体、个体、样本及样本容量,每一个,数量,考点二 统计图表,总数,频数,1,数目,百分比,考点三 平均数、中位数和众数,中间,平均数,最多,大,考点四 方差,对点演练,9,2.5,C,C,A,B,C,B,探究一 统计的方法,针对训练,探究二 平均数、众数、中位数,针对训练,A,(2)计算该同学所得分数的平均数.,探究三 方差,针对训练,探究四 统计量与统计图结合考查,图27-2,针对训练,图27-3,图27-4,探究五 统计图表的综合应用,针对训练,B,A,A,A,图27-10,

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