Daily demand for marigold flowers at a large garden store is shown below. Compute:
a. A three-period moving average for each period.
b. A five-period moving average for each period.
Period Demand
1 ......... 85
2 ......... 92
3 ......... 71
4 ......... 97
5 ......... 93
6 ......... 82
7 ......... 89