解读随机变量与不同位置特征值的变差
首发时间:2009-03-16
摘要:变差存在于一切过程说明统计分析的中心内容是数据变异程度的度量和分解,从而把数据间存在的差异解释清楚。然而变差不仅仅是随机变量与平均值离散程度的变异指标,变差还应该是随机变量与不同位置特征值离散程度的变异指标。基于这样的思考本文有必要对变差进行新的解读。
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Explains the random variable and the different position characteristic value variation
Abstract:The variation exists in all procedure declaration statistical analysis central content is the data variation degree measure and the decomposition, thus has the data the difference explanation is clear. However the variation is not only the random variable and the mean value is separated the degree the variation target, the variation should also be the random variable and the different position characteristic value is separated the degree the variation target. Has the necessity based on such ponder this article to carry on the new explanation to the variation.
Keywords: Variation Position characteristic value Variation target Sigma Explanation
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