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प्रश्न
The following data gives the production of bleaching powder (in ’000 tons) for the years 1962 to 1972:
| Year | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 |
| Production | 0 | 0 | 1 | 1 | 4 | 2 | 4 | 9 | 7 | 10 | 8 |
Obtain the trend values for the above data using 5-yearly moving averages.
बेरीज
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उत्तर
We construct the following table to obtain 5-yearly moving averages for the given data:
| Year (t) | Production (in ’000 tonnes) (xt) | 5-yearly moving total | 5-yearly moving averages Trend value |
| 1962 | 0 | - | - |
| 1963 | 0 | - | - |
| 1964 | 1 | 6 | 1.2 |
| 1965 | 1 | 8 | 1.6 |
| 1966 | 4 | 12 | 2.4 |
| 1967 | 2 | 20 | 4.0 |
| 1968 | 4 | 26 | 5.2 |
| 1969 | 9 | 32 | 6.4 |
| 1970 | 7 | 38 | 7.6 |
| 1971 | 10 | - | - |
| 1972 | 8 | - | - |
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