The director of a large public library must schedule employees to reshelve books and periodicals checked out of the library. The number of items checked out will determine the labor requirements. The following data reflect the number of items checked out of the library for the past three years:

The director needs a time series method for forecasting the number of items to be checked out during the next month. Find the best simple moving average forecast you can. Decide what is meant by €˜best€ and justify yourdecision.

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Month Year 3 1,986 2,669 .321 564 2467 2.419 2635 2,4322.088 2,150 2,464 2,667 2,201 23782,122 2663 2,217 206 2,055 1,678 1,845 2,291 2,065 2,4312,364 2,147 2,2742,1892,45 Year 1Year 2 1,847 Febnaary March May August September october November December 2,445 1869 1,894 2,441