47. The coefficient of determination measures the proportion of A) explained variation relative to total variation. B) variation due to the relationship among variables. C) error variation relative to total variation. D) variation due to regression. Answer: A Difficulty: Medium Goal: 3 48. What happens as the scatter of data values about the regression plane increases? E Difficulty: Medium Goal: 3 AACSB: ASScrambling: LockedStatistical Techniques in Business & Economics, Lind/Marchal/Wathen, 13/e244

49. For a unit change in the first independent variable with other things being held constant, what change can be expected in the dependent variable in the multiple regression equation 11.73.62.5ˆXXY?2B Difficulty: Easy Goal: 1 50. The best example of a null hypothesis for a global test of a multiple regression model is: 4A Difficulty: Easy Goal: 4 51. The best example of an alternate hypothesis for a global test of a multiple regression model is: A) 43211ββββ:HB) 3211ββββ:HC) 0aresβ'theallNot :HD) If F is less than 20.00 then fail to reject Answer: 41C Difficulty: Easy Goal: 4 52. The best example of a null hypothesis for testing an individual regression coefficient is: C Difficulty: Easy Goal: 5 AACSB: AS53. In multiple regression analysis, residuals ( Y – ˆY) are used to: C Difficulty: Easy Goal: 6 Test Bank, Chapter 14245

54. In multiple regression, a dummy variable can be included in a multiple regression model as C Difficulty: Easy Goal: 8 55. Multiple regression analysis is applied when analyzing the relationship between A) An independent variable and several dependent variables B) A dependent variable and several independent variables C) Several dependent variables and several independent variables D) Several regression equations and a single sample Answer: B Difficulty: Easy Goal: 1 Fill-in-the-Blank56. Violating the need for successive observations of the dependent variable to be uncorrelated is called ____________________________.