I want to perform a 2-way ANOVA in SPSS and for some reason do not get significance values for one of my within-subject factors.
I basically perform the steps as described e.g. here: https://statistics.laerd.com/spss-tutorials/two-way-repeated-measures-anova-using-spss-statistics.php
I have 20 subjects (each one represented in one line); and two within-subject factors: scene and zone. The data is of Type 'Comma' and Measure 'Scale'.
One row is organized as follows: scene1-zone1 ; scene1-zone2 ; scene1-zone3 ; scene2-zone1 ; scene2-zone2; scene2-zone3
In the output file, in the 'test of wihtin-subjects factors' I only get '-' as the result in the table, same goes for Error(Scene). For the other factor, I get a proper result.
The beginning of the document states the following warning: 'The HOMOGENITY specification in the PRINT subcommand will be ignored because there are no between-subject factors'. However, I think this can be ignored, can't it!?
What seems to be the reason not getting results for both factors? I greatly appreciate any help.
Thanks a lot