变异量数(measures of variation)：用来描述群体中各受试者所得的分数 ..
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... 1.中央趋势量(Measures of Central Tendency) .分散度量(Measures of Variation) .偏态(Skew) ...
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Introduce measures of variation 介绍偏差测量
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Instead of chasing after retailers using the old standby of return on assets, consider a variation: Go for companies whose ROA measures will remain unscathed if and when rulemakers lower the boom on lease accounting.
FORBES: Retailers
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