A simulation study is carried out to illustrate the performance of proposed method. A simulation
study is divided into three subsections. Section 6.1 illustrate the performance of the Cp, Sp, Rp and
GSp criteria through numerical examples for all combinations of absence and presence of outlier and
multicollinearity. A correct model selection ability of these criteria is evaluated in Section 6.2. Also, the
various choices of the estimator of σ
2
are considered in Section 6.3 and their performance is studied
through numerical example.