For estimated regression equation of Y on X Yhat 10020X the

For estimated regression equation of Y on X: Y(hat)= 100+20X, the coefficient of correlation between X and Y is:

a)0.20

b)20

c)100

d)120

e) none of the above

Solution

Here the one regression equation of y on x is only given, but to find the coefficient of correlation we need two regression lines. I.e., r=[b_yx*b_xy].

Therefore, solution is none of the above