The following data were created from the equation y 54x1 3

The following data were created from the equation y = 5+4x1 - 3x2: Use multiple linear regression to fit this data.

Solution

X=[1 0 0;1 2 1;1 2.5 2;1 1 3; 1 4 6;1 7 2];

Y=[5; 10; 9; 0; 3; 27];

Y

A=XT*X;

A K=(XT*X)ˆ-1;

K B=K*XT*Y;

B M=X*B;

M E=Y-M;

E MaxErr=max(abs(Y-M))