Can someone please specify the differences between Bonferroni, Scheffe, Tukey, Dunnette?
I know that Bonferroni, Scheffe, Tukey are all under homogenity of variance. Dunnette under heterogenity of variance.
Scheffe, Tukey and Dunnette, Equal cell sizes while Bonferroni has unequal cell sizes.
I know that Bonferroni, Scheffe, Tukey are all under homogenity of variance. Dunnette under heterogenity of variance.
Scheffe, Tukey and Dunnette, Equal cell sizes while Bonferroni has unequal cell sizes.
posted by Unknown @ 7:47 PM
2 Comments:
At 8:46 PM,
Gemma said…
Scheffe is heterogeneity
At 11:35 PM,
Eric An said…
If you violate the assumption of homogeneity of variance (i.e., have heterogeneity of variance), use Scheffe, the Adjusted Scheffe, Dunnett T3 (only if your sample size is less than 75), Dunnett C (only if your sample size is greater than or equal to 75), or Games-Howell.
In addition, if you have unequal cell sizes, then use Scheffe.
In other circumstances (when you have homogeneity of variance and equal cell sizes), then use Tukey.
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