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A
statistical measure used in computing the correlation coefficient between
two variables; the covariance is the mean of (x- x(bar))(y-y(bar)) over
all pairs of values for the variables x and y, where x(bar) is the mean
of the x values and y(bar) is the mean of the y values. A statistical value
measuring the simultaneous deviations of x and y variables from their means.
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