For 50 students of a class the regression equation of marks in Statistics (X) on the marks in Accountancy () is 3Y – 5 X + 180 = 0. The mean marks of Accountancy is 44 and variance of marks in Statistics is 9/16th of the variance of marks in Accountancy. Find the mean marks of Statistics and the coefficient of correlation between marks in two subjects.

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For 50 students of a class the regression equation of marks in Statistics (X) on the marks
in Accountancy (Y) is 3Y – 5 X + 180 = 0. The mean marks of Accountancy is 44 and variance of marks
in Statistics is 9/16th of the variance of marks in Accountancy. Find the mean marks of Statistics and the
coefficient of correlation between marks in two subjects.
Transcribed Image Text:For 50 students of a class the regression equation of marks in Statistics (X) on the marks in Accountancy (Y) is 3Y – 5 X + 180 = 0. The mean marks of Accountancy is 44 and variance of marks in Statistics is 9/16th of the variance of marks in Accountancy. Find the mean marks of Statistics and the coefficient of correlation between marks in two subjects.
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