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Answer: Variance inflation factor (VIF) Difficulty: Easy Goal: 7Fill-in-the-BlankUse the following to answer questions 111-115:It has been hypothesized that overall academic success for college freshmen as measured bygrade point average (GPA) is a function of IQ scores , hours spent studying each week , andone's high school average . Suppose the regression equation is:
The multiple standard error is 6.313 and R2 = 0.826. 111. What is the predicted GPA for a student with an IQ of 108, 32 hours spentstudying per week and a high school average of 82? _____ Answer: 3.249 Difficulty: Medium Goal: 10 112. What is the predicted GPA if the IQ is 108, the number of hours spent studyingis 30, and the high school average is 82? ______ Answer: 3.029 Difficulty: Medium Goal: 10 113. Assuming other independent variables are held constant, what effect on the GPAwill there be if the numbers of hours spent studying per week increases from 32 to 36?________ Answer: The answer depends on the value of hours studied per week Difficulty: HardGoal: 10 114. How many independent variables are in the regression equation? ___ Answer: four Difficulty: Hard Goal: 10
115. How will a student's GPA be affected if the student’s high school average was 80and an additional hour is spent studying each weeknight? ________ Answer: increases by 0.551 Difficulty: Hard Goal: 10