Carsiygra 8-23. (a) The correlation coefficient between two vaighles X and Y is found to b T is the correlation between 2x and (- y) ? (b) "If the correlation coefficient between two variables x and y is positive, then the coeffigig191 correlation between-x and - y is also positive" Comment.

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(rsiy ay 8-23. (a) The correlation coefficient between two vavighles X and Y is fgund to be
is the correlation between 2x and (-y) ?
(b) "If the correlation coefficient between two variables x and y is positive, then the coeffigigB191
correlation between- x and - y is also positive" Comment.
粥
(h
Transcribed Image Text:(rsiy ay 8-23. (a) The correlation coefficient between two vavighles X and Y is fgund to be is the correlation between 2x and (-y) ? (b) "If the correlation coefficient between two variables x and y is positive, then the coeffigigB191 correlation between- x and - y is also positive" Comment. 粥 (h
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