Class 14 - Store sales_AD Size.xls - Sales Ads 231 156 10...

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Sales Ads Size 231 8.2 8.2 Sales = annual net sales/$1000 156 6.9 4.1 Ads = amount spent on advertizing/$1000 10 3 4.3 Size = size of sales district/1000 families 519 12 16.1 437 10.6 14.1 Use Ads and Size to pred 487 11.8 12.7 299 8.1 10.1 195 7.7 8.4 20 3.3 2.1 68 4.9 4.7 570 17.4 12.3 428 10.5 14 464 11.3 15 15 2.5 2.5 65 4.7 3.3 98 4.6 2.7 398 5.5 16 161 7.2 6.3 397 10.4 13.9 497 11.5 16.3 528 12.3 16 99 2.8 6.5 0.5 3.1 1.6 347 9.6 11.3 341 9.8 11.5 507 12 15.7 400 7 12
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dict the sales.
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SUMMARY OUTPUT Regression Statistics Multiple R 0.98756714 R Square 0.97528885 Adjusted R S 0.97322959 Standard Erro 31.4244969 Observations 27 ANOVA df SS MS F Significance F Regression 2 935380.376 467690.188 473.610794 5.185E-020 Residual 24 23699.9761 987.499005 Total 26 959080.352 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept -111.330944 14.6555873 -7.59648466 7.791E-008 -141.57859 -81.0832986318 Ads 21.5336603 2.69413965 7.99277809 3.207E-008 15.9732294 27.0940912767 Size 23.0570271 1.97840275 11.6543647 2.283E-011 18.9738045 27.1402496884 RESIDUAL OUTPUT ObservationPredicted Sales Residuals 1 254.312684 -23.3126843 2. 2 131.785123 24.2148769 3 52.4152577 -42.4152577 4 518.291125 0.70887508 5 442.029954 -5.02995443 6 435.590492
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