Question: Consider the following time series data. a. Construct a time series plot. What type of pattern exists in the data? b. Use a multiple regression

Consider the following time series data.

a. Construct a time series plot. What type of pattern exists in the data?
b. Use a multiple regression model with dummy variables as follows to develop an equation to account for seasonal effects in the data. Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; Qtr3 = 1 if Quarter 3, 0 otherwise.
c. Compute the quarterly forecasts for next year?

Quarter Year 1 Year 2 Year 3

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