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Definition of 'correlation'


  1. a reciprocal relation between two or more things
       Synonyms: correlativity
  2. a statistic representing how closely two variables co-vary; it can vary from -1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation); "what is the correlation between those two variables?"
       Synonyms: correlation coefficient coefficient of correlation
  3. a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
       Synonyms: correlational statistics

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