Correlation and Regression

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Question : 137 of 156

Marks: +1, -0

If

cov(x, y)=25,

what restrictions should put for the standard deviations of

x

and

y

?

No restriction
The product of Standard deviations should be more than 25
The product of Standard deviations should be less than 25
The sum of Standard deviations should be less than 25

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