Which of the following increase(s) as the difference between the group means increases? A) MS _between B) F _obt C) t _obt D) all of these

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All of these increase as the difference between the group means increases. The larger the difference between the group means, the larger the MS (Mean Square) between the groups and the smaller the MS within the groups. As a result, the F-statistic (MS between groups / MS within groups) will be larger. Similarly, the t-statistic (difference between group means / standard error of the difference) will also be larger.

Which of the Following Increase(s) as the Difference Between the Group