normalcy test for residuals
I am plotting Y vs X (see attachment). The regression line apperas to be quite good. R seq > 0.99. However when I make a residul plot, I get an inverted U. Some people say that such a residual plot point to that the Regression line is not good enough. My question is: 1. Is there some way to improve the residual plot and the Leniar regression (may be by changing intercept ?). 2. I performed a te...
krln
j_bonnouvrier