Correlation and Regression

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Question : 129 of 156

Marks: +1, -0

If for two variable

x

and

y,

the covariance, variance of

x

and variance of

y

are

40,16

and

256

respectively, what is the value of the correlation coefficient?

$0.01$
$0.625$
$0.4$
$0.5$

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