2019年春七年级数学下册第6章数据与统计图表6.5频数直方图课件新版浙教版20190119245.pptx

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第6章 数据与统计图表,6.5 频数直方图,学知识,筑方法,勤反思,知识点一 频数直方图,6.5 频数直方图,学知识,组距,6.5 频数直方图,B,知识点二 组中值,平均数,6.5 频数直方图,60,类型一 绘制频数直方图,筑方法,6.5 频数直方图,6.5 频数直方图,6.5 频数直方图,【归纳总结】作频数直方图的步骤 (1)列出频数表; (2)画具有相同原点,横、纵两条互相垂直的数轴,分别表示各组别和相应的频数然后分别以横轴上每一组的两边界点为端点的线段为底边,作高为相应频数的长方形,就得到所求的频数直方图,6.5 频数直方图,类型二 学会从频数直方图中获取相关信息,6.5 频数直方图,6.5 频数直方图,小结,勤反思,频数直方图,6.5 频数直方图,构成,画法,列出频数表,条形图,画出频数直方图,横轴,纵轴,反思,6.5 频数直方图,

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