Question: The data stored in < MCDONALDS > represent the gross revenues (in billions of current dollars) of McDonalds Corporation from 1975 to 2012. a. Plot

The data stored in < MCDONALDS > represent the gross revenues (in billions of current dollars) of McDonald’s Corporation from 1975 to 2012.

a. Plot the data.

b. Calculate the linear trend forecasting equation.

c. Calculate the quadratic trend forecasting equation.

d. Calculate the exponential trend forecasting equation.

e. Determine the best-fitting autoregressive model, using

α 5 0.05.

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