Question: Juan was asked by his boss to develop a forecast model for the WTI Spot crude oil price. Juan was eager to show off his

Juan was asked by his boss to develop a forecast model for the WTI Spot crude oil price. Juan was eager to show off his regression skills and was confident he could build a model that would accurately predict the WTI spot price. After receiving a file of the Cushing OK WTI Spot Price, he got to work. Juan started by first plotting the time series data in Excel and determining if there were any trends or seasonality. He decided to start by building several models.

QUESTION. Show the linear trend and trend with seasonality model equations

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