Review Questions_Apr_Nineteen

Review Questions_Apr_Nineteen - Review Questions...

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Unformatted text preview: Review Questions (04/19/2010) 1. Select the correct option for identifying multi-collinearity in multiple regression A. Leverage value B. Standardized residuals C. Cooks distance D. VIF(Variance Inflation Factor)* 2. What is multi-collinearity? A. Multi-collinearity results when an independent variable correlates with another independent variable* B. Multi-collinearity results when an independent variable correlates with dependent variable C. Multi-collinearity results when an independent variable correlates with that variable itself. D. Multi-collinearity results when a dependent variable correlates with that variable itself. 3. What is the range of VIF(Variance Inflation Factor) recommended for acceptable multi-collinearity? A. < 10* B. > 10 C. > 15 D. < 15 4. What is forward regression? A. It adds one X variable at a time still R 2 is significantly high.* B. It begins with all X variables and removes one by one if the decrease of R 2 is insignificant. C. It includes one X variable at a time, but removes any insignificant variable till maintaining higher R 2 . D. None of the above. 5. What is backward regression? A. It adds one X variable at a time still R 2 is significantly high....
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This note was uploaded on 03/12/2011 for the course BCIS 3610 taught by Professor Koh during the Spring '08 term at North Texas.

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Review Questions_Apr_Nineteen - Review Questions...

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