standard error of the difference
standard error of the difference The difference between the mean values of two sets of data, the standard deviations of which are known. The standard error of the difference (SE) is given by: √(σ21/Σx1 + σ22/Σx2), where σ1 and σ2 are the two standard deviations, and Σx1 and Σx2 are the sums of the two samples.
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standard error of the difference
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