When there are 3 predictor variables to consider, what is the correct procedure?
Do we make box plots for all the possible 2 combinations or is there a way to compare 3 variables?
Sorry if this is a basic question.
The response is uranium response and there are 3 predictor variables: time, temp, and acid strength. All 3 predictor variables have 3 levels, low, medium, high. I would like to try to run a 3-way ANOVA analysis on the data set, it's an exercise question for a class, but not too sure how to start, so I'm using box plots to see how the data looks like first.