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Suppose we have the following time series data on variable Y where t = trend: tY 1 10 2 15 3 15 4 25 5

Suppose we have the following time series data on variable Y where t = trend: tY 1 10 2 15 3 15 4 25 5 55 What is the forecast value of Y when t = 6 using the simple trend model (first order polynomial)? What is the forecast value of Y when t = 6 using a third-order polynomial model? Explain how one would choose the best forecasting model in general?
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Suppose we have the following time series data on variable Y where t= trend: t Y 110 215 315 425 555 What is the forecast value of Y when t=6 using the simple trend model (first order polynomial)? What is the forecast value of Y when t=6 using a third-order polynomial model? Explain how one would choose the best forecasting model in general

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