Quiz5a_KEY_Sp11

Quiz5a_KEY_Sp11 - A Name: _KEY_ 23 March 2011 IE330 Spring...

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Name: ________________KEY___________________ A 23 March 2011 IE330 Spring 2011 Closed book, closed notes, no calculators Quiz #5a 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___________________ A 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 = - 935 + 1.64 LastMonthSales - 117 SeasonRank - 5.0 DowChangePercent + 1.63 SalesTwoMonthsAgo - 0.803 SalesProjMgr1 - 0.951 SalesProjMgr2 Predictor Coef SE Coef T P Constant -935 1828 -0.51 0.631 LastMonthSales 1.640 1.012 1.62 0.166 SeasonRank -116.77 67.46 -1.73 0.144 DowChangePercent -5.05 31.64 -0.16 0.880 SalesTwoMonthsAgo 1.6295 0.9346 1.74 0.142 SalesProjMgr1 -0.8031 0.6356 -1.26 0.262 SalesProjMgr2 -0.9506 0.7237 -1.31 0.246 S = ________ R-Sq = 70.7% R-Sq(adj) = 35.6% Analysis of Variance Source DF SS MS F P Regression 6 174282 29047 2.01 _______ Residual Error 5 72130 144126 Total 11 246412 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 o e g M s s
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Quiz5a_KEY_Sp11 - A Name: _KEY_ 23 March 2011 IE330 Spring...

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