The file P14_24.xlsx contains the daily closing prices of Walmart stock during a one-year period. Use the moving averages method with a carefully chosen span to forecast this time series for the next...

The file P14_24.xlsx contains the daily closing prices of Walmart stock during a one-year period. Use the moving averages method with a carefully chosen span to forecast this time series for the next three trading days. Defend your choice of the span used.