I have ran a nested ANOVA on a data set and the results suggest that there is an association for the higher level with an insignificant P-value but also an association for the lower level with a significant P-value. Is this even possible, or have I done something completely wrong?
I have a data set comprising of: Groups (A,B,C...) - each group contains 3 different genotypes (1,2,3...). The same genotype doesn't occur in two different groups. For example, I have group A with genotypes 1,2,3 and Group B with genotypes 4,5,6, and group C with genotypes 7,8,9. I then have several measurements of height for each genotype. I had to perform an analysis that can test for differences between the three groups as well as for the genotypes within each of the groups. I chose nested ANOVA, but now I'm slightly doubting myself. A huge thank you for any help!