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Does SPSS offer Tukey-Kramer post-hoc tests?

Troubleshooting


Problem

I'm analyzing data from an unbalanced one-way ANOVA and want to use the Tukey-Kramer method for doing post-hoc comparisons. I don't see this mentioned anywhere. Can SPSS produce Tukey-Kramer comparisons?

Resolving The Problem

Yes, the ONEWAY (Analyze>Compare Means>One Way ANOVA in the menus), GLM (Analyze>General Linear Model>Multivariate) and UNIANOVA (Analyze>General Linear Model>Univariate) procedures offer the Tukey (HSD, or "Honestly Significant Difference") test. For unequal sample sizes the table labeled Multiple Comparisons in the Post Hoc Tests section implements the Tukey-Kramer modification of the Tukey test and confidence intervals for mean differences. You do not have to do anything special to obtain Tukey-Kramer results with unequal sample sizes. Simply specify Tukey and this table automatically produces Tukey-Kramer comparisons with unequal Ns. An enhancement request has been filed with SPSS Development requesting that this be added to the documentation.

Note that the Homogeneous Subsets results use the harmonic mean of the cell sizes, a procedure sometimes known as the Miller-Winer procedure, which does not generally provide the stated level of Type I error protection

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Historical Number

60847

Document Information

Modified date:
16 April 2020

UID

swg21478616

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