20 The coefficient on b1 is the slope for HCAP when EGAL is zero (since the variables are mean-adjusted, it is when EGAL is at the mean) (Judd and McClelland, 1989).
20 The coefficient on b1 is the slope for HCAP when EGAL is zero (since the variables are mean-adjusted, it is when EGAL isat the mean) (Judd and McClelland, 1989).