E270 HW7 - PROBLEM SET 7 RESSION Next THRE questions are based on the folowing data x y 1 3 2 7 3 5 4 1 5 14 1 Which of the folowing is the cor ect

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Unformatted text preview: PROBLEM SET 7 RESSION Next THRE questions are based on the folowing data x y 1 3 2 7 3 5 4 1 5 14 1 Which of the folowing is the cor ect scater diagram for this data set? 2 The estimated regres ion equation for the data is: a y = 0.1 + 1.6x ̂ b y = 0.2 + 2.6x ̂ c y = 0.3 + 3.6x ̂ d y = 0.4 + 4.6x ̂ 3 a 7.6 b 8.6 c 9.6 d 10.6 Next THRE questions are based on the folowing x y 2 25 3 25 5 20 1 30 8 16 4 The estimated regres ion equation for the data is: a y = 26.3 − 1.68x ̂ b y = 28.3 − 1.78x ̂ c y = 30.3 − 1.8 x ̂ d y = 32.3 − 1.98x ̂ 5 a 19.05 b 18.05 c 17.05 d 16.05 6 Media Brand Expenditures ($) Case Sales Coca-Cola Clas ic 131.3 1,929.20 Pepsi-Cola 92.4 1,384.60 Diet Coke 60.4 81 .4 Sprite 5 .7 541.5 Dr. Pep er 40.2 536.9 Mountain Dew 29 535.6 7-Up 1 .6 219.5 The estimated regres ion equation for the data is: a y = −15.42 + 14.42x. A one milion dolar in media expenditures wil increase sales by ap roximately 14.42 milion. ̂ b y = −14.42 + 13.42x. A one milion dolar in media expenditures wil increase sales by ap roximately 13.42 milion. ̂ c y = −13.42 + 12.42x. A one milion dolar in media expenditures wil increase sales by ap roximately 12.42 milion. ̂ d y = −12.42 + 1 .42x. A one milion dolar in media expenditures wil increase sales by ap roximately 1 .42 milion. ̂ 7 a total sales would be about 954 b total sales would be about 974 c total sales would be about 9 4. d total sales would be about 1,014. 8 Percentage Airline on Time Complaints Southwest 81.8 0.21 Continental 76.6 0.58 Northwest 76.6 0.85 US Airways 75.7 0.68 United 73.8 0.74 American 72.2 0.93 Delta 71.2 0.72 America West 70.8 1.2 TWA 68.5 1.25 a b c d 9 a 0.9 b 0.8 c 0.6 d 0.4 Next FOUR questions are based on the folowing Given are five observations for two variables, x and y. x y 1 3 2 7 3 5 4 1 5 14 10 The S E for the model is: a 14.4 b 13.4 c 12.4 d 1 .4 1 The S T for the model is: a 80 b 75 c 70 d 65 12 The S R for the model is: a 53.6 b 5 .6 c 61.6 d 67.6 13 a 0.794 b 0.821 c 0.845 d 0.895 Next FOUR questions are based on the folowing Production Volume Total Cost (Units) ($) 40 4,0 0 450 5,0 0 5 0 5,40 60 5,90 70 6,40 750 7,0 0 14 a y = 1346.67 + 8.6x ̂ b y = 1246.67 + 7.6x ̂ c y = 1 46.67 + 6.6x ̂ d y = 1046.67 + 5.6x ̂ 15 What is the ad itional cost per unit produced? a # # b $6.60 c # # d $7.60 16 a $5,016.67 b # # c $5,036.67 d # # 17 What percentage of the variation in total cost can be explained by production volume? a 0.8587 b 0.8987 c 0.9187 d 0.9587 Change in 2-Year Change in Executive Return to Equity Compensation (%) (%) Dow Chemical 201.3 18 Rohm & Ha s 146.5 28 Morton International 76.7 10 Union Carbide 158.2 28 Praxair-34.9 15 Air Products & Chemicals 73.2-9 Eastman Chemical-7.9-20 18 a y = −0.0154 + 0.1058x ̂ b y = −0.0165 + 0.1 46x ̂ c y = −1.0198 + 0.1258x ̂ d y = −1.1485 + 0.2 63x ̂ 19 What percentage of the change in executive compensation is explained by 2-year change in return in equity?What percentage of the change in executive compensation is explained by 2-year change in return in equity?...
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This document was uploaded on 10/27/2011 for the course ECON-E 270 at Indiana.

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