I'm new to statistics and the only software i know how to use is SPSS. I need help....
I have 3 independent groups with sizes: 24, 27, 37. I wanted to test the difference between the means of their ages using ANOVA.
*mean age ± SD* *Group1: 40.7297 ± 6.01225 *Group2: 31.5926 ± 4.93231 *Group3: 32.125 ± 4.4557
I have no problem with variances because Levene's test says they have equal. When I tested the NORMALITY of each group (with Shapiro-Wilk), one of them is NOT (p=0.022). I tried transforming my data using natural log and checked for normality of each.This time the other group gave p=0.031. Is it correct if i still use ANOVA? or is there any other test I can use with this situation?
Any help would be much appreciated.