First, we need to find which number when substituted into the equation will give the answer zero. \(f(1) = {(1)^3} + 4{(1)^2} + (1) - 6 = 0\) Therefore \((x - 1)\)is a factor. Factorise the quadratic ...

Best-subset selection aims to find a small subset of predictors, so that the resulting linear model is expected to have the most desirable prediction accuracy. It is not only important and imperative ...

This is a preview. Log in through your library . Abstract On the basis of a sample of observations, an investigator wants to determine the appropriate degree of a polynomial in the index, say time, to ...