Thanks Robert for such a nice presenetation.

I am stuck at evaluating the values of coefficients of independent variables (namely b1, b2, b3, b4) by hand (not through a software) in a multivariate regression equation (Yprime = a+b1X1+b2X2+b3X3+b4X4).

Would appreciate your help.

Babsy (aibabsy@hotmail.com)