I have 1 categorical factor (3 treatments) and 1 continuous factor (weight) and then I have 5 continuous response variables.
From what I have read, I should not use a two way ANOVA as one of the factors is continuous. Is this correct? Should I be using a Multiple Regression instead?
I was advised that I can use ANOVA, but I'm not sure if this is correct based on what I have read. I could convert the continuous factor to categorical, but I have also read on this site that this is not the preferred option.
My aim with the data is to see if there is a significant difference between the 3 treatments in regards to the response variables, which would be a standard one-way ANOVA, but I also want to see if weight effects the response variables.
My analysis will be with R.