he student scores in an examination are 35, 30, 25, 26, 40, 44, 36, 54, 64, 65, 75, 60, 70, 85, 90, 92, 46, 52, 63, 52. The daily pocket money (in Rs.) for the same students (respectively) are 110, 110, 120, 140, 150, 140, 150, 210, 200, 140, 210, 240, 300, 260, 500, 270, 310, 550, 450, 500.

Find the following:- 

(a) Regression of scores on pocket money

(b) Regression of pocket money on scores

(c) Derive Pearson’s Correlation coefficient from the above two regression coefficients