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Revision as of 08:13, 12 December 2011 by Cg_pham (talk | contribs)



variance

Estimates variance based on a data cache column’s values.

Calculates

Where x is the sample mean average and n is the sample size.

Note that the variance is NOT calculated based on the categories, but using all data in the dcs. All empty values are ignored.

Syntax

variance(dcsColumn)

Arguments

dcsColumn:  is a numeric dcs column (column whose data type is Number)

Example

variance(C1) where C2 == [1];

Availability

Version 5.2