Covariance/Definition: Difference between revisions

Revision as of 18:06, 24 January 2010

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A definition or brief description of Covariance.

A statistical parameter that depends on the existence and the degree of a linear trend.

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-The degree to which two variables move together (defined as the average value of  the products of the deviations of the corresponding values of the two variables from their respective means, and expressed mathematically as Cov(x,y).) If their covariance is positive, both move in the same direction; if it is negative, then  when one increases the other decreases.
+A statistical parameter that depends on the existence and the degree of a linear trend.