2019年春七年级数学下册第6章数据与统计图表6.2条形统计图和折线统计图课件新版浙教版20190119249.pptx

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1、第6章 数据与统计图表,6.2 条形统计图和折线统计图,学知识,筑方法,勤反思,知识点一 条形统计图,6.2 条形统计图和折线统计图,学知识,高,6.2 条形统计图和折线统计图,C,知识点二 折线统计图,数据变化的走向,6.2 条形统计图和折线统计图,6.2 条形统计图和折线统计图,B,类型一 画条形统计图,筑方法,6.2 条形统计图和折线统计图,6.2 条形统计图和折线统计图,6.2 条形统计图和折线统计图,【归纳总结】绘制条形统计图的一般步骤 (1)根据数据,画出两条互相垂直的数轴; (2)在两条数轴上,适当分配数值的位置,确定长方形的宽度和长方形间的距离; (3)按照数据,画出长方形,并

2、注明数字 注意:画条形统计图时要标明横轴与纵轴的实际意义,并选取合适的单位长度,6.2 条形统计图和折线统计图,类型二 画折线形统计图,6.2 条形统计图和折线统计图,6.2 条形统计图和折线统计图,【归纳总结】绘制折线统计图的一般步骤 (1)画出横、纵两条互相垂直的数轴,分别表示两个类别的标目; (2)根据横、纵方向上的各对对应的标目数据画点; (3)用线段依次把每相邻的两点连结起来 注意:在同一个统计图中,反映不同类别数据的折线要用不同的图标把它们区分开,6.2 条形统计图和折线统计图,类型三 从统计图中获取信息,6.2 条形统计图和折线统计图,6.2 条形统计图和折线统计图,6.2 条形统计图和折线统计图,【归纳总结】读懂统计图,从不同的统计图中得到需要的信息是解决问题的关键,6.2 条形统计图和折线统计图,小结,勤反思,统计图,构成,6.2 条形统计图和折线统计图,绘制过程,条形统计图,折线统计图,特点,构成,特点,反思,6.2 条形统计图和折线统计图,

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