Compute a three-period moving average forecast given demand for shopping carts for the last five periods.
Period | Demand |
1 | 42 |
2 | 40 |
3 | \left. \begin{matrix} 43 \\[0.5cm] 40 \\[0.5cm] 41 \end{matrix} \right\} \text{the 3 most recent demands} |
4 | |
5 |