Ch8 class notes SmartPhoneSales (1).xlsx - 1 Year 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 Quarter Period 1 1 2 2 3 3 4 4 1 5 2 6 3 7 4 8 1 9 2 10 3 11 4 12 1

Ch8 class notes SmartPhoneSales (1).xlsx - 1 Year 1 1 1 1 2...

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1 2 3 Year Quarter Period Q1 Q2 Q3 Sales (1000s) 1 1 1 1 0 0 4.8 1 2 2 0 1 0 4.1 1 3 3 0 0 1 6.0 1 4 4 0 0 0 6.5 2 1 5 1 0 0 5.8 2 2 6 0 1 0 5.2 2 3 7 0 0 1 6.8 2 4 8 0 0 0 7.4 3 1 9 1 0 0 6.0 3 2 10 0 1 0 5.6 3 3 11 0 0 1 7.5 3 4 12 0 0 0 7.8 4 1 13 1 0 0 6.3 4 2 14 0 1 0 5.9 4 3 15 0 0 1 8.0 4 4 16 0 0 0 8.4 5 1 17 1 0 0 7.18
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Intercept Period Q1 Q2 Q3 Coefficients 6.06875 0.145625 -1.363125 -2.03375 -0.304375 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 Sales (1000s)
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SUMMARY OUTPUT Regression Statistics Multiple R 0.7108597144 R Square 0.5053215336 Adjusted R Squa 0.4699873574 Standard Error 0.8769414236 Observations 16 ANOVA df SS MS F ignificance F Regression 1 10.99801 10.99801 14.30121 0.002023 Residual 14 10.76637 0.769026 Total 15 21.76438 Coefficients andard Err t Stat P-value Lower 95%Upper 95% Lower 95.0% Intercept 4.8525 0.459872 10.55185 4.8E-008 3.866173 5.838827 3.866173 Period 0.1798529412 0.047559 3.781694 0.002023 0.077849 0.281856 0.077849 RESIDUAL OUTPUT Observation redicted Sales (1000 Residuals 1 5.0323529412 -0.232353 2 5.2122058824 -1.112206 3 5.3920588235 0.607941 4 5.5719117647 0.928088 5 5.7517647059 0.048235 6 5.9316176471 -0.731618 7 6.1114705882 0.688529 8 6.2913235294 1.108676 9 6.4711764706 -0.471176 10 6.6510294118 -1.051029 11 6.8308823529 0.669118 12 7.0107352941 0.789265 13 7.1905882353 -0.890588 14 7.3704411765 -1.470441 15 7.5502941176 0.449706 16 7.7301470588 0.669853 - - Residuals
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Upper 95.0% 5.838827 0.281856 0 2 4 6 8 10 12 14 16 18 -2 -1.5 -1 -0.5 0 0.5 1 1.5 Period Residual Plot Period
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SUMMARY OUTPUT Regression Statistics Multiple R 0.815153 R Square 0.664475 Adjusted R Squ 0.580593 Standard Error 0.780091 Observations 16 ANOVA df SS MS F ignificance F Regression 3 14.46188 4.820625 7.921602
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