# Question 3

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Question 1   4 / 4 points True or False : When an additional explanatory or independent variable is introduced into a multiple regression model , the coefficient of multiple determination or R-square will always become significant .
True
False
Question 2   4 / 4 points True of False : The Chancellor of a university has commissioned a team to collect data on students ’ GPAs and the amount of time they spend bar hopping every week ( measured in minutes ) . He wants to know if imposing much tougher regulations on all campus bars to make it more difficult for students to spend time in any campus bar will have a significant impact on general students ' GPAs . A scatterplot will give him a definite answer .
Question 3   0 / 4 points True or False : A multiple regression is called “ multiple ” because it has several independent variables .
Question 0   / 4 points 4 The variation attributable to the relationship between the independent variables and the explained variable in a regression analysis is represented by
Question 10   4 / 4 points If the Durbin - Watson statistic has a value close to 0 , which assumption is violated ? In other words , which assumption is the Durbin - Watson statistic checking to see is violated ?
Independence of errors .
Normality of errors .
Homoscedasticity .
None of the above .
Quiz Submissions - Test 1 - Form A Attempt 1 Question 1 4 / 4 points True or False: When an additional explanatory or independent variable is introduced into a multiple regression model, the coefficient of multiple determination or R-square will always become significant. True False
Question 2 4 / 4 points True of False: The Chancellor of a university has commissioned a team to collect data on students’ GPAs and the amount of time they spend bar hopping every week (measured in minutes). He wants to know if imposing much tougher regulations on all campus bars to make it more difficult for students to spend time in any campus bar will have a significant impact on general students' GPAs. A scatterplot will give him a definite answer.
Question 3 0 / 4 points True or False: A multiple regression is called “multiple” because it has several independent variables.
Question 4 0 / 4 points The variation attributable to the relationship between the independent variables and the explained variable in a regression analysis is represented by
Question 4 / 4
5 points True or False: The coefficient of determination represents the ratio of SSR to SST. True False
Question 6 4 / 4 points The least squares method minimizes which of the following?
Question 7 4 / 4 points The slope ( b 1 ) represents . .
Question 8 4 / 4 points The error represents the discrepancy between the observed dependent variable and its _______ value.
Question 9 4 / 4 points TABLE 14-3 An economist is interested to see how consumption for an economy (in \$ billions) is influenced by gross domestic product (\$ billions) and aggregate price (consumer price index). The Microsoft Excel output of this regression is partially reproduced below.