... sample product sum 样本乘积和 sample product moment 样本乘积动差 Sample product building 样板房 ...
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sample moment matrix : 样本矩矩阵,样本调查矩阵 sample product moment : 样本乘积矩,样本乘积动差 augmented sample moment about the mean : 增广样本中心矩 ..
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