I'm conducting an ANOVA mixed model 2 X 3 (group X condition). Right now, I'm checking for the assumptions of ANOVA, such as normality. I should check indipendently for group and condition, right? I did it in two ways: 1) By, at first, splitting the sample (selecting "Data/Split file..." and entering the group variable) and then running the "1 sample Kolmogorov-Smirnov Test" and choosing "Normal distribution". 2) Without splitting the sample, but selecting "Analyze/Descriptive Statistics/Explore..." and entering the group variable as a factor and clicking "Plots..." and checking "Normality plots with test".
The 1) returns all variables absolutely not significant (0.80 < p < 0.90). The 2) ran both the Kolmogorov-Smirnov and Shapiro-Wilk tests, with the former resulting not significant for all variables (but all p values lower than or equal to 0.20), instead the latter in some cases considerably significant (e.g. 0.012).
I don't know which one should I trust, can you help me? Thanks!