In trying to give a multiple regression analysis result in different combination, how can I define the bestfit

Question

I tried to show four combinations of regression analysis. However, I am not sure how to show which combination of the four presented would be the best fit?

Answer 1

Most computer programs that do regressions also provide statistical measures of fit. the three that you should look at are R,F and t. R tell you how much of the variation is explain by your independent variables, F and t about the probability that the fit has statistical meaning over all and for each coefficient. Your program instructions will tell you how to use them or a explanation can be found at
http://cheminfo.informatics.indiana.edu/~rguha/writing/notes/stats/node5.html

Answer 2

2