Ayushi posted an Question
August 10, 2020 • 23:31 pm 30 points
  • UGC NET
  • Economics

88. the correlation betweenx and y will be zero if (1) var (x )=0 (2) var (x). var () =0 (3) var (y)-0 (4) covar (y)=0

88. The correlation betweenx and y will be zero if (1) Var (x )=0 (2) Var (x). Var () =0 (3) Var (y)-0 (4) Covar (y)=0

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    Nidhi taparia

    The correct answer is (4). Correlation is zero when covariance is zero. If any one or both variances are zero, then the correlation coefficient is not defined.

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    Nidhi taparia Best Answer

    The correct answer is (4). When covariance between x and y is zero, their correlation is also zero. If the variance of any of them or both is zero, then correlation is not defined.

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