Armed only with his fingers, the owner decides that the safest forecasting approach is exponential smoothing with an alpha of 0.8. He uses the January demand and the January forecast just to get the ball rolling. Generate a forecast for the year using this technique and then calculate forecast errors using MAD. What is the mean absolute deviation for this forecasting approach

The need to find a mean is to know the average of a set of numbers. However, after the mean is found, the next step is the absolute deviation

That is, the determining of the distance between each of the original numbers from the mean as explained above is a Mean absolute deviation that also means the average distance between the mean of a set of numbers.

In a set of datas, an absolute deviation help to see the distance between each of the scores and the beginning average scores.

In conclusion, based on the monthly sales data, the mean absolute deviation for this forecasting approach equals 49.1.

Missing words" After tallying the receipts for their first year of operation, the owners of the Taco Barn are encouraged. Sales of their artisnal tacos, made from such exotic ingredients as ground beef, cheese, and beans, have been strong and seem to give hope to the coming year. Taco sales by month are shown in the table.

Month Sales January 474, February 485, March 501 April 588, May 579, June 673, July 594, August 679, September 608, October 699, November 732, December 732

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