PopulationStdDevbeforereadingbasicsyntaxcrystalsyntax

Returns the population standard deviation, calculated by taking the square root of the variance over all records or array elements.

PopulationStdDev( fld )
PopulationStdDev( fld, condFld )
PopulationStdDev( fld, condFld, cond )
PopulationStdDev( array )

fld	The name of a field whose values should be used to calculate the population standard deviation.
condFld	The name of the field that groups the values of fld (if fld isn't an array).
cond	A string declaring the type of grouping to be used on condFld. This only makes sense for groups based on Date, DateTime, Time, and Boolean fields. See Summary Field Conditions for a list of strings you can use here.
array	The name of an array variable whose values should be used to calculate the population standard deviation.

Numeric value.

PopulationStdDev({data.Temperatur}, {data.Region})
//returns the value of variance for a field Temperature grouped by Region.

PopulationStdDev([{f1}, {f2}, {f3}, {f4}])
-> 3,57 (assuming that f1=2, f2=2, f3=10, f4=8)

If the values in fld should be grouped, a group based on condFld is needed. If the group does not exist in the report, you can add it using i-net Designer or using API method: Engine.addGroup.

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