Interpreting Coefficients of CorrelationDate: 07/01/2004 at 22:24:51 From: Varun Subject: Coefficients of Correlation Given a coefficient of correlation of r = 0.66, state what percent of variation in y is due to the variation in x. Our textbook does not explain how to do these type of questions at all. Basically, I have no idea where to start. Date: 07/02/2004 at 22:46:22 From: Doctor Mitteldorf Subject: Re: Coefficients of Correlation Hi Varun - One interpretation of r^2 is that it is the proportion of the variation in y that can be explained by the variation in x (that's just something you learn about the correlation coefficient). So the answer to your question is in that statement, and it really only requires one or two quick steps since you are given the value of r in the problem. Good luck--write back if you have further questions. - Doctor Mitteldorf, The Math Forum http://mathforum.org/dr.math/ |
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