Im running an 2 way ANOVA in SPSS using age, university and gender over selling prices, working fine with one of my conditions, but my second condition returns a completely blank table on the Levene's test of equality of error variances? Just a decimal in the F value box and a decimal in the p value? All cases (n=20) are there and similar to those in first condition which works fine. Is this because there is 0 variance?
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