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描述性统计手册/分布形状的度量/偏度
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摘自 Wikibooks，开放世界的开放书籍
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描述性统计手册
正态曲线是双边对称的。偏度是衡量与正态曲线偏差的度量。偏度系数是一条曲线的统计不对称性度量。正态曲线的偏度系数为零。
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图书：描述性统计手册
华夏公益教科书
