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NDA Math Statistics

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Question : 27

Total: 100

The set of bivariate observation (x1,y1),(x2,y2),.....(xn,yn) are such that all the values are distinct and all the observations fall on a straight line with non-zero slop. Then the possible values of the correlation coefficient between x and y are

0 and 1 only
0 and –1 only
0, 1 and –1
–1 and 1 only

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