Mauchly’s test of sphericity with Friedmans??

#1
Hi,

In my lab report im using Friedman's test of differences for my data as it is non-parametric and not normally distributed.
Do I need to include Mauchly's test of sphericity too or is that only for repeated-measures ANOVA?

Thanks
 
#2
Sorry, I forgot to also add that I do have three repeated measures conditions in my Friedman test, which is why I am unsure on whether I need the test of sphericity.