Question: Estimate the trend values using the data given below by taking a three-yearly moving average.
| Year | Value |
| 1987 | 3 |
| 1988 | 4 |
| 1989 | 8 |
| 1990 | 6 |
| 1991 | 7 |
| 1992 | 11 |
| 1993 | 09 |
| 1994 | 10 |
| 1995 | 14 |
Solution:
If the moving average is an even period moving average, the moving total and moving average which are placed at the centre of time span fromwhich they are computed fall between two time periods.
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