[R] [Friedmann test for 2 factor mixed design] I need your help.I trying to do non-parametric 2way anova

[이아름]

Hi!
 
I'm trying to do the non-parametric test for 2 factor mixed anova. 
 
I got 2 factors, one is within-subject factor, AGE(2levels), and the other is between-subject factor, Speed(6levels).
One dependent variables, RT.
 
The data, I got, is not satisfied with the normality and homogeneity of variance. 


So I tried to do the non-parametric test and use the Friedmann test function(friedman.test) in R . 


and I got the error message as below.. 
"Error in friedman.test.default(RT, Speed, AGE) : 
friedman.test error: not an unreplicated complete block design"
 
How can I deal with this problem? 
Please help  
 
Thanks!
 
Kind regards, 
 
Ahreum 


 

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