31. From the data given below find : (a) the two regression equations. (b) the coefficient of correlation between marks in Economics and Statistics. (c) the most likely marks in Statistics when the marks in Economics are 30. Marks in Economics : Marks in Statistics : 43 25 35 32 31 36 29 38 34 32 46 49 41 36 32 31 30 33 39

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