Using a covariate in a factorial
Hi all, I have a data set where I am wanting to use initial body weight as a covariate for the subsequent body weights of the trial. However, when I use the covariate it changes my least square means. My question is why? For example, my average end weight for one treatment without the covariate included is 1310.9, but when the covariate is included it changes to 1302.3.Shouldn't it only effect t...
jay_holavarri