Question: Chapter 4 Problem 9 Nelson Industries' Sales History for the last 10 years 1 Year 2 Dec-08 3 Dec-09 4 Dec-10 5 Dec-11 6 Dec-12

Chapter 4 Problem 9 Nelson Industries' Sales
Chapter 4 Problem 9 Nelson Industries' Sales
Chapter 4 Problem 9 Nelson Industries' Sales History for the last 10 years 1 Year 2 Dec-08 3 Dec-09 4 Dec-10 5 Dec-11 6 Dec-12 7 Dec-13 8 Dec-14 9 Dec-15 10 Dec-16 11 Dec-17 12 13 14 15 16 17 Sales 945 875 760 690 545 420 305 285 250 210 Time Index 1 2 3 4 5 6 7 8 9 10 a. Plot sales versus time. b. Estimate the regression model for a linear time trend of sales. c. What is the mean absolute percent error of the linear regression estimates for these 10 years? d. Using this model, estimate sales for year 11. Use the dataset provided below: c4p9-sales. xinn Saloc

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