IOE366W07_FinalExam

IOE366W07_FinalExam - IOE 366 Winter 2007 Final Exam True...

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IOE 366 Winter 2007 Final Exam True or False (5 Questions, 2 Points Each, 10 Points Total) Decide if the following statements are true or false. If the statement is false, identify how to change it to make the statement true. 1. In testing 0. 1 : 0 H β = versus 1 : 0, a H using a sample of 20 observations, the rejection region for .01 level of significance test is -2.878 O t O 2.878. 2. In Stepwise Regression, choosing the regression model that maximizes R p 2 ; this is equivalent to minimizing MSE(p). 3. The ratio SSE/SST is the proportion of variation that cannot be explained by the simple linear regression model. 4. If the residual plot yields points close to a 60 degree line through (0,0), then the estimated regression function gives accurate predictions of the values actually observed. 5. In simple linear regression analysis, if the residual sum of squares is zero, then the coefficient of determination 2 r must be 0. - 1 -
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IOE 366 Winter 2007 Final Exam Multiple Choice (5 Questions, 3 Points Each, 15 Points Total) Please select the best answer. 1. If r 2 = .75 is the value of the coefficient of multiple determination from a cubic regression model ε β + + + + = 3 3 2 2 1 0 x x x y and n =15, then the adjusted
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IOE366W07_FinalExam - IOE 366 Winter 2007 Final Exam True...

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