21.In order to determine the coefficient of correlation between two sets of observations X and Y with 5 observations each, the following calculations were made: ΣΧ; = 40 , ΣΥ; = 45, ΣΥ1² =495,summasion of X1²=440 ,summasion of of X1Y1=420
on subsequent verification, it was discovered that the pair (X= 6,Y= 7) had wrongly been taken as (16,17)when working out the above values. Determine the correct value of the coefficient of correlatic Determine the equation of the regression line of Y on X. Assuming the same linear trend, determine the best estimate of Y which corresponds to x=14​