Variance Calculations With Microsoft Excel

Worksheet - Variance Calculations With Microsoft Excel

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Excel provides useful statistical functions for seeing the variance of a data set. In general, these variance functions retrieve a set of values stored in a worksheet range and then make the foreseen, calculation.

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A variance, just to remind readers, is a tasteless measure of describing the spread of observations in a distribution. A variance is related to an additional one statistical measure, the approved deviation. A variance is equal to the quadrilateral of the approved deviation.

Variance of a Sample with the Var Function

If the data set you're working with is a sample and you do not want to contain logical values or text from the set in the calculation, you use the Var function. For example, if you're using a new output process that is supposed to growth productivity and have a series of data for the numbers of parts produced each day, you can find the sample variance. The Var function uses the following syntax:

=Var (data set range)

Variance of a Sample with the Vara Function

If the data set is a sample but you want to contain logical values or text in the calculation, you use the Vara function. Excel counts cells containing the logical value True as 1 and cells containing text or False 0. The Vara function uses the following syntax:

=Vara (data set range)

Variance of a people Sample with the Varp Function

If the data set you're working with is a people and you do not want to contain logical values or text from the set in the calculation, you use the Varp function. The Varp function uses the following syntax:

=Varp (data set range)

Variance of a people with the Varpa Function

If the data set is a people but you want to contain logical values or text in the calculation, you use the Varpa function. The Varpa function uses the following syntax:

=Varpa (data set range)

A Final Note About the Data Set Range Argument

One other note: You can contain manifold worksheet ranges as your data set range discussion when using the variance functions. For example, if you were calculating the variance of a sample using the Var function and had your data stored in several dissimilar worksheet ranges, your Var function might look like this:

=Var(B1:B:10,B101:B110,B200)

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