Unformatted text preview: change units Z scores Zx = XX Zy= YY Sx Sy If we have two quantitative variables with fairly linear association we can measure the association by the correlation coefficient r If r is greater than 0 association is positive r >0 If r is less than 0 association is negative r<0 The closer r is to 1 or 1 the more linear it is If r is close to 0 there is no association (Ditto # 5 pink sheet )...
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 Fall '07
 sutphin
 Pearson productmoment correlation coefficient, Scatter plot, Euclidean geometry

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