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Roi And Cost

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Subject
Statistics
School
Grantham University
Type
Homework
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1. Scatter diagram of Y = ‘Annual % ROI’ against X = ‘Cost’ with the trend line, the equation of the trend line, and the coefficient of determination on the graph Business major 11.00% y = -2E-07x + 0.118 R² = 0.941 Annual% ROI 10.00% 9.00% 8.00% 7.00% 6.00% 5.00% 4.00% $50,000.00 $100,000.00 $150,000.00 $200,000.00 $250,000.00 Cost Annual ROI Engineering major 13.00% 12.00% 11.00% 10.00% 9.00% 8.00% 7.00% 6.00% 5.00% 4.00% $50,000.00 y = -2E-07x + 0.1268 R² = 0.9515 $100,000.00 $150,000.00 Cost $200,000.00 $250,000.00 2. The b0 and b1 of the regression equation defined as y ̂ = b0 + b1X. Business Major Trendline equation (As obtained from the graph) y = bo + b1 x y = 0.118 − 2  10 −7 x b0 = 0.118 b1 = −2  10 −7 Engineering Major Trendline equation (As obtained from the graph) y = bo + b1 x y = 0.126 − 2  10 −7 x b0 = 0.126 b1 = −2  10 −7 3. The estimated ‘Annual % ROI’ when the ‘Cost’ (X) is $160,000. Business Major: y = 0.118 − 2  10 −7 x x = 160000 y = 0.118 − 2  10 −7  160000 = 0.086 Therefore estimated Annual%RO I for Business Major having a cost of $160000 is 8.6% Engineering Major: y = 0.126 ...
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