Q. 11 (a) Fit a straight line to the following data : Year : 1981 1982 1983| 1984 | 1985 | 1986 | 1987 | 1988 Sales ('000) 48 55 63 65 72 84 90 87

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Q: Q1 Q2 Q3 100 73 40 Q4 30 Q1 110 Q2 Q3 Q4 78 45 34 Q1 114 Q2 80

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