Question: Problems 2 through 4 are based on the following data. Observations of the demand for a certain part stocked at a parts supply depot during

Problems 2 through 4 are based on the following data. Observations of the demand for a certain part stocked at a parts supply depot during the calendar year 2013 were

Problems 2 through 4 are based on the following data. Observations of

2. Determine the one-step-ahead forecasts for the demand for January 2014 using3 , 6-, and 12-month moving averages.

3. Compute the one-step-ahead three-month and six-month moving-average forecasts for July through December. What effect does increasing N from 3 to 6 have on the forecasts?

4. Using the data from Problems 2 and 3, calculate the one-step-ahead forecasts for January 2014 using 3- month, 6-month, and 12-month weighted moving averages.

\begin{tabular}{lclc} \hline Month & Demand & Month & Demand \\ \hline January & 89 & July & 223 \\ February & 57 & August & 286 \\ March & 144 & September & 212 \\ April & 221 & October & 275 \\ May & 177 & November & 188 \\ June & 280 & December & 312 \\ \hline \end{tabular}

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