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August 28, 2015

Homework Help: STATISTICS

Posted by SROBSON on Sunday, April 17, 2011 at 6:12pm.

A) If a regression experiment has correlation coefficient r= 0.75, what precent of total variation is explained by the regression?

B) if 85% of total variation is explained by the regression, and there is an inverse relationship between y and x, then what is the correlation coefficient?

C) if 30% of the total variation is not explained by the regression, then what is the correlation coefficient? Assume a direct relationship between y and x.

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