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gao kao zhong tong ji zhi shi de xin liang dian jing ye tu
Author(s): 
Pages: 48-49
Year: Issue:  6
Journal: ZHONGXUE SHUXUE ZAZHI(GAOZHONG BAN)

Abstract:  新课程必修3统计一章介绍了5种图表,分别是频率分布表、频率分布直方图、频率分布折线图、总体密度曲线和茎叶图,其中频率分布直方图和茎叶图是高考的热点.茎叶图是用来表示样本数据分布的一种方法,它是将样本数据有条理地列出来,从中观察样本分布情况的图.茎是指中间的一列数,叶是指从茎的旁边生长出来的数,茎和叶可根据数据的特点灵活地划分.在样本数据较少时,用茎叶图表示数据的效果比较好.茎叶图内容在近两年的新...
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