Quiz5b_KEY_Sp11

# Quiz5b_KEY_Sp11 - B Name: _KEY_ 23 March 2011 IE330 Spring...

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Name: _______________KEY_____________________ B 23 March 2011 IE330 Spring 2011 Closed book, closed notes, no calculators Quiz #5b 1 2 0 1 2 0 00 2 2 2 2 1 2 1 2 1 2 1 2 * 0 1 2 0 12 22 1 1 2 2 2 0 Some helpful test statistics: / 1 1 11 2 ˆˆ 1 D p p X X X X ZT ss n n n n D X X TT Sn S nn n S n S S PP Z

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Name: _______________KEY_____________________ B For each of the questions on the back side of this sheet, assume the assumptions of the regression have been met, and refer to the following regression: The regression equation is Sales = 723 + 0.449 LastMonthSales + *** SeasonRank - 5.5 DowChangePercent + 0.285 SalesTwoMonthsAgo - 0.358 SalesProjMgr1 + 0.391 SalesProjMgr2 Predictor Coef SE Coef T P Constant 723 1325 0.55 0.609 LastMonthSales 0.4486 0.4754 0.94 0.389 SeasonRank 9.96 12.19 0.82 0.451 DowChangePercent -5.49 11.00 -0.50 0.639 SalesTwoMonthsAgo 0.2852 0.5249 0.54 0.610 SalesProjMgr1 -0.3578 0.4680 -0.76 0.479 SalesProjMgr2 0.3908 0.4954 0.79 0.466 S = _________ R-Sq = 75.6% R-Sq(adj) = 46.3% Analysis of Variance Source DF SS MS F P Regression 6 16005 2668 2.58 ______ Residual Error 5 5172 1034 Total 11 21177 Best Subsets: S D a o l L w e a C s S S s h T a a t a w l l M S n o e e
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Quiz5b_KEY_Sp11 - B Name: _KEY_ 23 March 2011 IE330 Spring...

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