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correlation |
Also found in: Medical, Financial, Wikipedia, Hutchinson | 0.06 sec. |
correlationIn statistics, the degree of association between two random variables. The correlation between the graphs of two data sets is the degree to which they resemble each other. However, correlation is not the same as causation, and even a very close correlation may be no more than a coincidence. Mathematically, a correlation is expressed by a correlation coefficient that ranges from −1 (never occur together), through 0 (absolutely independent), to 1 (always occur together). correlationIn statistics, a measure of the strength of the relationship between two variables. It is used to predict the value of one variable given the value of the other. For example, a correlation might relate distance from urban location to gasoline consumption. Expressed on a scale from -1.0 to +1.0, the strongest correlations are at both extremes and provide the best predictions. See regression analysis. |
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The relationship between the indices of past occupational exposure and the observed personality traits was evaluated using Pearson's correlation coefficient and on a subgroup level by machine learning methods (regression trees). To determine the strength and direction of the relationships among the variables, Pearson's correlation coefficient was used. For continuous measures, we assessed consistency using Pearson's correlation coefficient and a percent matching statistic (Rosner, 1990). |
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