National sample survey organisation conducts surveys on

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A. Socio-Economic Subjects

B. Agricultural and Industrial Subjects

C. Demographic issues

D. All of the above

Answer: Option D

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A. The central limit theorem

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Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one.
Reason (R): The geometric mean between two regression coefficients is the coefficient of correlation.

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A. 0

B. 1

C. 0.4

D. 0.8

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