Question
Obtain trend values for data in Problem 4 using 4-yearly centered moving averages.
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| Machine/Product | Mixer per unit | Food processor per unit | Available time |
| A | 3 | 3 | 36 |
| B | 5 | 2 | 50 |
| C | 2 | 6 | 60 |
| Year | 1960 | 1965 | 1970 | 1975 | 1980 |
| Production | 0 | 3 | 3 | 4 | 4 |
| Year | 1985 | 1990 | 1995 | 2000 | 2005 |
| Production | 5 | 6 | 8 | 8 | 10 |
| Year | 1976 | 1977 | 1978 | 1979 | 1980 |
| Index | 0 | 2 | 3 | 3 | 2 |
| Year | 1981 | 1982 | 1983 | 1984 | 1985 |
| Index | 4 | 5 | 6 | 7 | 10 |
| Rice | Wheat | Groundnut | |
| Shantaram | $15000$ | $13000$ | $12000$ |
| Kantaram | $18000$ | $15000$ | $8000$ |
| Rice | Wheat | Groundnut | |
| Shantaram | $18000$ | $15000$ | $12000$ |
| Kantaram | $21000$ | $16500$ | $8000$ |
| Year | Production (million Barrels) | Year | Production (million Barrels) |
| 1962 | 0 | 1970 | 6 |
| 1963 | 0 | 1971 | 7 |
| 1964 | 1 | 1972 | 8 |
| 1965 | 1 | 1973 | 9 |
| 1966 | 2 | 1974 | 8 |
| 1967 | 3 | 1975 | 9 |
| 1968 | 4 | 1976 | 10 |
| 1969 | 5 |