Analysis: A. Incorrect. Regression analysis is used to predict the value. B. Incorrect. Regression analysis is used to predict the value. C. Incorrect. Regression analysis is used to predict the value. D. Correct. Regression analysis is used to predict the value. ANSWER: D Ref: Section 16.1-16.2 The residual is defined as the difference between: the actual value of and the estimated value of y y the actual value of and the estimated value of x x the actual value of and the estimated value of y x the actual value of and the estimated value of x y Analysis: A. Correct. The residual is defined as the difference between the actual value of and the y estimated value of y B. Incorrect. The residual is defined as the difference between the actual value of and the y estimated value of y C. Incorrect. The residual is defined as the difference between the actual value of and the y estimated value of y D. Incorrect. The residual is defined as the difference between the actual value of and the y estimated value of y ANSWER: A Ref: Section 16.1-16.2 In the simple linear regression model, the represents the: y-intercept change in per unit change in y x. change in per unit change in x y. value of when = 0. y x value of when = 0. x y Analysis: A. Incorrect. In the simple linear regression model, the represents the value of y-intercept y when = 0 x B. Incorrect. In the simple linear regression model, the represents the value of y-intercept y when = 0 x C. Correct. In the simple linear regression model, the represents the value of y-intercept y when = 0 x D. Incorrect. In the simple linear regression model, the represents the value of y-intercept y when = 0 x ANSWER: C Ref: Section 16.1-16.2
Analysis: A. Incorrect. Regression analysis is used to predict the value. B. Incorrect. Regression analysis is used to predict the value. C. Incorrect. Regression analysis is used to predict the value. D. Correct. Regression analysis is used to predict the value. ANSWER: D Ref: Section 16.1-16.2 The residual is defined as the difference between: the actual value of y and the estimated value of y the actual value of x and the estimated value of x the actual value of y and the estimated value of x the actual value of x and the estimated value of y Analysis: A. Correct. The residual is defined as the difference between the actual value of y and the estimated value of y B. Incorrect. The residual is defined as the difference between the actual value of y and the estimated value of y C. Incorrect. The residual is defined as the difference between the actual value of y and the estimated value of y D. Incorrect. The residual is defined as the difference between the actual value of y and the estimated value of y ANSWER: A Ref: Section 16.1-16.2 In the simple linear regression model, the y-intercept represents the: change in y per unit change in x. change in x per unit change in y. value of y when x = 0. value of x when y = 0. Analysis: A. Incorrect. In the simple linear regression model, the y-intercept represents the value of y when x = 0 B. Incorrect. In the simple linear regression model, the y-intercept represents the value of y when x = 0 C. Correct. In the simple linear regression model, the y-intercept represents the value of y when x = 0 D. Incorrect. In the simple linear regression model, the y-intercept represents the value of y when x = 0 ANSWER: C Ref: Section 16.1-16.2
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