Question: Use both a linear and quadratic model to explore trends in the deseasonalized data from Problem 15.40. Which model seems to produce a better fit

Use both a linear and quadratic model to explore trends in the deseasonalized data from Problem 15.40.

Which model seems to produce a better fit of thedata?

Industrial Machinery and Equipment Shipments 54.019 56.495 50.169 52.891 51.915 55.101 53.419 57.236 57.063 62.488 60.373 63.334 62.723 68.380 63.256 66.446 65.445 68.011 63.245 66.872 59.714 63.590 58.088 61.443 Time Period lst quarter (year 1) 2nd quarter 3rd quarter quarter lst quarter (year 2) 2nd quarter 3rd quarter 4th quarter Ist quarter (year 3) 2nd quarter 3rd quarter 4th quarter lst quarter (year 4) 2nd quarter 3rd quarter 4th quarter lst quarter (year 5) 2nd quarter 3rd quarter 4th quarter lst quarter (year 6) 2nd quarter 3rd quarter 4th quarter

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