So I've attached a tab-delimited text file containing some data. The X values are Ved and the Y values are Ped.
My grouping variables are "Genotype", "Sex" and "Treatment". Only one genotype is listed in the file I added though.
"Animal ID" refers to the experimental unit. For each...
Brief description of my problem: My data consists of physiological data from animal experiments. For each animal I have conducted multiple experiments and the data are best described by linear regression. I wish to compare the regression coefficients (slopes) between my 4 groups.