$ q = \displaystyle \frac {\text{the difference between any two means}}{\text{the standard error of the difference between any two means}} $

$ q = \displaystyle \frac {\overline{X_i}-\overline{X_j}}{\text{se}} $

$ se = \displaystyle \sqrt{ \frac {Var_{by error}}{n} } $
$ se = \displaystyle \sqrt{ \frac {MS_{error}}{n} } $


cf.

$ t = \displaystyle \frac {\text{the difference between any two means}}{\text{the standard error of the difference between the two means}} $

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last modified 2012-05-08 14:46:25