This Covariance Calculator can help you determine the covariance factor which is a measure of how much two random variables (x,y) change together and find as well their sample mean. You can discover more about it below the tool.


(x) Values:
(y) Values:

How does this covariance calculator work?

In data analysis and statistics, covariance indicates how much two random variables change together.

In case the greater values of one variable are linked to the greater values of the second variable considered, and the same corresponds for the smaller figures, then the covariance is positive and is a signal that the two variables show similar behavior.

The covariance is negative when the greater values of one variable are linked to the smaller values of the second one, thus this situation is interpreted as a signal that the two figures have opposite behavior.

Taking into account all of the above, we can conclude that the sign (+/-) of the covariance indicates the tendency in the linear relationship between the given variables.

This covariance calculator applies the formulas explained below, while returning these results:

  • Mean x

Mean formula for x

  • Mean y

Mean formula for y

  • Sample Covariance - Cov (x,y)

Sample Covariance formula for (x,y)

  • Population Covariance - Cov (x,y)

Population Covariance formula for (x,y)

  • N - Count of the pairs (x,y) in the data set.

15 Jun, 2015 | 0 comments

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