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correlation of data

correlation of data - random errors r=0 there is no...

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Regression and Correlation of Data Correlation: Correlation is a measure of the association between random variables, say X and Y. No assumption that one of these variables is known without error. Assume that X and Y are related linearly, so the usual correlation coefficient gives a measure of the linear association between X and Y, determined by yy xx xy xy S S S r = This coefficient is often denoted simply by r.
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