version 3

Variance (series) Number

Parameter | Type | Description | |

series | Field | Data for which to return the variance | |

Function result | Number | Variance of series |

Description

`Variance` returns the variance for `series`. If `series` is an indexed field, the index is used to find the variance.

Example

The following example is an object method for the variable `var`. The object method assigns the sum of squares for a data series to `var`:

var:=Variance(Students]Grades)

The following method is called to print the records in the selection and to activate break processing:

ALL RECORDS([Students])ORDER BY([Students];[Students]Class;>)BREAK LEVEL(1)ACCUMULATE([Students]Grades)OUTPUT FORM([Students];"PrintForm")PRINT SELECTION([Students])

**Note**: The parameter to the ` BREAK LEVEL` command should be equal to the number of breaks in your report. For more information about break processing, refer to the printing commands.

See Also

Average, Std deviation, Sum, Sum squares.