Using the Studentized Residuals Ti to Determine Influential Points in a Multiple

Multiple Choice

Using the Studentized residuals ti to determine influential points in a multiple regression model with k independent variable and n observations and letting t_n-k-2 denote the upper critical value of a two-tail t test with a 0.10 level of significance, X_i is an influential point if

A) $\left|t_{i}\right|< t_{n-k-2}$ .

B) $\left|t_{i}\right|>t_{n-k-1}$ .

C) $\left|t_{i}\right|< t_{n-k-1}$ .

D) $\left|t_{i}\right|>t_{n-k-2}$ .