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

question 191

Short Answer

Using the Studentized residuals ti to determine influential points in a multiple regression model with k independent variable and n observations and letting tn-k-2 denote the upper critical value of a two-tail t test with a 0.10 level of significance, Xi is an influential point if a) $| t | < t _ { n - k - 1 }$
b) $| t | > t _ { n - k - 1 }$
c) $\left| t _ { i } \right| < t _ { n - k - 2 }$
d) $\left| t _ { i } \right| > t _ { n - k - 2 }$

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