Kolmogorov and Levene

gvt · Post by **gvt** » Sun Sep 17, 2023 8:32 pm

I check Kolmogorov for all data and are >0.05 after for repeated measures anova, for Levene test, 3 of my 4 variables are <0.001. Should I change for non parametric anova?

reason180 · Post by **reason180** » Sun Sep 17, 2023 10:10 pm

FYI . . .

viewtopic.php?t=2731

reclusivestupid · Post by **reclusivestupid** » Mon Sep 18, 2023 4:16 am

If you did the Kolmogorov-Smirnov test and found that the data for your dependent variable in the repeated measures ANOVA are normally distributed (p > 0.05), this means that the assumption of normality is met for that variable. This is proof that parametric analysis, like the repeated measures ANOVA, should be used connections puzzle

But if the Levene's test for homogeneity of variances shows that the variances of your groups are significantly different (p 0.05) for three out of the four variables, it suggests that the assumption of homogeneity of variances has been broken. In this situation, you might want to use something other than the repeated measures ANOVA.

gvt · Post by **gvt** » Mon Sep 18, 2023 8:01 am

reclusivestupid wrote: ↑Mon Sep 18, 2023 4:16 am If you did the Kolmogorov-Smirnov test and found that the data for your dependent variable in the repeated measures ANOVA are normally distributed (p > 0.05), this means that the assumption of normality is met for that variable. This is proof that parametric analysis, like the repeated measures ANOVA, should be used connections puzzle

But if the Levene's test for homogeneity of variances shows that the variances of your groups are significantly different (p 0.05) for three out of the four variables, it suggests that the assumption of homogeneity of variances has been broken. In this situation, you might want to use something other than the repeated measures ANOVA.

What type of test would be the best option in this case? Everything I've reviewed so far suggests using non-parametric tests. The data transformation has been tested with several options and the result for the Levene test remains the same.

reason180 · Post by **reason180** » Tue Sep 19, 2023 5:09 pm

Again, viewtopic.php?t=2731

gvt · Post by **gvt** » Thu Sep 21, 2023 3:21 pm

reason180 wrote: ↑Tue Sep 19, 2023 5:09 pm Again, viewtopic.php?t=2731

I could see your answer but I dont understand it. It´s simple my question.

jamovi