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Sum
Solve the following problem :
Obtain trend values for data in Problem 19 using 3-yearly moving averages.
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Solution
Construct the following table for finding 3-yearly moving averages:
| Year t |
Yield (in '000 tonnes) yt |
3–yearly moving total | 3–yearly moving averages trend value |
| 1959 | 0 | – | – |
| 1960 | 1 | 3 | 1 |
| 1961 | 2 | 6 | 2 |
| 1962 | 3 | 6 | 2 |
| 1963 | 1 | 4 | 1.3333 |
| 1964 | 0 | 5 | 1.6667 |
| 1965 | 4 | 5 | 1.6667 |
| 1966 | 1 | 7 | 2.3333 |
| 1967 | 2 | 13 | 4.3333 |
| 1968 | 10 | – | – |
Concept: Measurement of Secular Trend
Is there an error in this question or solution?
