Question: Answer the following questions using the data from the Excel file S& P 500. xlsx described in Problem 16.51: a. Forecast the S& P Index

Answer the following questions using the data from the Excel file S& P 500. xlsx described in Problem 16.51:
a. Forecast the S& P Index for the end of January 2013 using a trend projection.
b. Check the forecasting model in part a for the presence of autocorrelation using α = 0.05.
c. Comment on the appropriateness of using trend projection for these data.

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