Question: Consider the file S12 59 xlsx which contains total monthly U S retail
Consider the file S12_59.xlsx, which contains total monthly U.S. retail sales data. Does a regression approach for estimating seasonality provide forecasts that are as accurate as those provided by (a)Winters’ method and (b) the ratio-to-moving-average method? Compare the summary measures of forecast errors associated with each method for de-seasonalizing this time series. Summarize the results of these comparisons.
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