Choose A and B the assumed means as : A = 25, and B = 27.5 from the respective mid points of the variables x and y width x: ix = 10 and width y : iy = 5
Regression equation of y on x
4 – 34.5 = 0.723 (x – 38.667)
= 0.723 x – 27.96 + 34.5
y = 0.723 x – 27.956+ 34.5
y = 0723x +6.544
Estimation of y when x = 32
y = 0.723 (32)+ 6.544
= 23.136 + 6.544 = 29.68
