Hi everyone,
My dissertation has participants answer three questions at four different timepoints in a video. For each timepoint, I have averaged the three questions for an average response per timepoint (4 scores). I also have a dichotomous between subjects variable, and two continuous covariates. My question is, do I need to standardize (z-scores) all the continuous variables within the analysis? Or can I just use the raw scores for each variable?
Thanks for your help.
My dissertation has participants answer three questions at four different timepoints in a video. For each timepoint, I have averaged the three questions for an average response per timepoint (4 scores). I also have a dichotomous between subjects variable, and two continuous covariates. My question is, do I need to standardize (z-scores) all the continuous variables within the analysis? Or can I just use the raw scores for each variable?
Thanks for your help.