This question is probably pretty basic but I don't know what key words I need to be googling to find the right answer.
I am running the same regression model on some data for two different years (the data is paired). I then calculate the correlation between the fitted values and residuals for each year. Now I would like to test if the difference in correlation coefficients is significant given the sample size.
What test should I use for this?
These are the data by the way :)
cor1 = 0.89 cor2 = 0.83 sample_size = 150