correlation

Noun

• 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

• 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?
    

• a reciprocal relation between two or more things

Related words

• Synonyms: 
  correlational statistics , correlation coefficient , coefficient of correlation , correlativity