相对地位量数常用二大类(一)百分等级(percentile ranks)与百分位数(percentile points)。(二)标准分数 (standard score)，包括Z分数、T分数、比西量表分数等。
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计算百分位数等级 （ percentile ranks ） 计算百分位数等级 （ ） 计算标准差 要比较两个分布，一个方法就是将两个 要比较两个分布， 分布都转换成标准分布。
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Thus the percentile ranks and mean ranks of the failure data and suspension data in them are given.
给出了失效数据和中止数据的百分位秩和平均秩。
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Even for the same subject, the percentile ranks of the ability values under these two models are quite different.
即使是同一被试在这两种模型下的能力值的相对地位也会发生改变。
For instance, the stock's SOIR of 0.80 ranks in the 93rd percentile of its annual range.
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Plus, this ratio ranks in the 88th percentile of its annual range, pointing to elevated levels of pessimism among the short-term options crowd.
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Compared to similar readings of the past year, the SOIR ranks in the 94th percentile, suggesting short-term options traders have rarely been more put-heavy during the past 12 months.
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