correlation
Noun

A reciprocal relation between two or more things (synset 113863850)
hypernym: reciprocality, reciprocity  a relation of mutual dependence or action or influencesynonym: correlativity

A statistic representing how closely two variables covary
It can vary from 1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation) (synset 106041776)domain category: statistics  a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametershypernym: parametric statistic  any statistic computed by procedures that assume the data were drawn from a particular distributionhyponym: pearson productmoment correlation coefficient, productmoment correlation coefficient  the most commonly used method of computing a correlation coefficient between variables that are linearly related
 multiple correlation coefficient  an estimate of the combined influence of two or more variables on the observed (dependent) variable
 biserial correlation, biserial correlation coefficient  a correlation coefficient in which one variable is manyvalued and the other is dichotomous
 chancehalf correlation, splithalf correlation  a correlation coefficient calculated between scores on two halves of a test; taken as an indication of the reliability of the test
 tetrachoric correlation, tetrachoric correlation coefficient  a correlation coefficient computed for two normally distributed variables that are both expressed as a dichotomy

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 (synset 106040778)
hypernym: statistics  a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametershyponym:
 curvilinear correlation, nonlinear correlation, skew correlation  any correlation in which the rates of change of the variables is not constant
 partial correlation  a correlation between two variables when the effects of one or more related variables are removed
 direct correlation, positive correlation  a correlation in which large values of one variable are associated with large values of the other and small with small; the correlation coefficient is between 0 and +1
 indirect correlation, negative correlation  a correlation in which large values of one variable are associated with small values of the other; the correlation coefficient is between 0 and 1
 spurious correlation  a correlation between two variables (e.g., between the number of electric motors in the home and grades at school) that does not result from any direct relation between them (buying electric motors will not raise grades) but from their relation to other variables
part meronym: correlational analysis  the use of statistical correlation to evaluate the strength of the relations between variablessynonym: correlational statistics
Other Searches
 Rhyme: Dillfrog, RhymeZone
 Definition: Wiktionary, Dictionary.com, Wikipedia, MerriamWebster, WordNet
 Imagery: Google, Flickr, Bing