Hi,
For e.g. if the regression equation is y=b0+b1*x1+b2*x2+b3*x3 ,
suppose initial values of regressor be x1=a,x2=b and x3=c where a,b,c are constants so that the value of dependent variable y is y= b0+b1*a+b2*b+b3*c ...(1)
Now suppose we change the regressor x1 to new value x1=a' while...
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