What Does Correlation Mean?

Answer

The correlation between two variables is the degree to which there is a 'linear relationship' between them. Correlation is usually expressed as a 'coefficient' which measures the strength of that linear relationship between the variables. The two main methods of calculating correlations are Spearman's Rank Correlation Coefficient and Pearson's or the Product-Moment Correlation Coefficient.
2 Additional Answers
Ask.com Answer for: what does correlation mean
cor·re·la·tion
[kawr-uh-ley-shuhn, kor-]
NOUN
1.
mutual relation of two or more things, parts, etc.: Studies find a positive correlation between severity of illness and nutritional status of the patients.
2.
the act of correlating or state of being correlated.
3.
Statistics. the degree to which two or more attributes or measurements on the same group of elements show a tendency to vary together.
4.
Physiology the interdependence or reciprocal relations of organs or functions.
5.
Geology the demonstrable equivalence, in age or lithology, of two or more stratigraphic units, as formations or members of such.
Source: Dictionary.com
Correlation is a term that is used in science to show how two different variables are related. Correlation is noted to be a very important statistic. You can find more information here: http://www.socialresearchmethods.net/kb/statcorr.php
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