In a bivariate data ${\rm{\Sigma }}x = 30,\;{\rm{\Sigma }}y = 400,\;{\rm{\Sigma }}{x^2} = 196,\;{\rm{\Sigma }}xy = 850\;and\;n = 10.\;$. the regression coefficient of y on x is

JEE MATHEMATICS MCQ: STATISTICS

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In a bivariate data

\mathrm{\Sigma }x = 30,\;\mathrm{\Sigma }y = 400,\;\mathrm{\Sigma }{x^2} = 196,\;\mathrm{\Sigma }xy = 850\;and\;n = 10.\;

. the regression coefficient of y on x is

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Correct option: C

-3.3

Option -3.3 is correct because the regression coefficient of y on x is calculated using the covariance of x and y, and the variance of x.

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