I want to undertake a Tukey HSD post hoc test on a Two-way Repeated Measures ANOVA in SPSS 25, but the option to select the test is unavailable.
In SPSS I go to: Analyse > General Linear Model > Repeated Measures
This brings up the "Repeated Measures Define Factors(s)" dialogue box where I define my factors.
The "Repeated Measures" dialogue box then appears, where I transfer over my Within-Subjects Variables
I click Plots which opens up the "Repeated Measures: Profile Plots" dialogue box where I set up my Horizontal Axis: and Separate Lines: and add them to the Plots box.
However, when I click on "Post Hoc", all of the options in the dialogue box are unavailable.
What am I missing?
Is it possible to do a Tukey test via: Analyse > General Linear Model > Repeated Measures?
Or do I have to use: Analyse > General Linear Model > Univariate?