Question
Obtain the trends values for the data on problem IV (1) using 5 yearly moving averages.
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| Years of service (X) | 11 | 7 | 9 | 5 | 8 | 6 | 10 |
| Monthly Income (Rs. 1000's) (Y) | 10 | 8 | 6 | 5 | 9 | 7 | 11 |