Computation of covariance - ungrouped data, Mathematics

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Computation of Covariance

Ungrouped Data

For a population consisting of paired ungrouped data points {X, Y}

1170_computation of covariance ungrouped data.png

where,

mx is the arithmetic mean of {X}

mY is the arithmetic mean of {Y}

N is the number of observations in each population.

For a paired sample {X,Y}

1758_computation of covariance ungrouped data1.png

where,

	is the arithmetic mean of sample {X}
	is the arithmetic mean of sample {Y}
N is the number of observations in each sample.

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