# Essbase variance

Difference between two values (for example, planned and actual value).

# Essbase @VARIANCE

Calculates the statistical variance of the specified data set (expList). The calculation is based upon a sample
of a population. Variance is a measure of the dispersion of a set of data
points around their mean (average) value.

Syntax

`@VARIANCE (SKIPNONE | SKIPMISSING | SKIPZERO | SKIPBOTH, expList)`
Parameter Description
SKIPNONE Includes all cells specified in expList,
regardless of their content, during calculation of the variance.
SKIPMISSING Excludes all #MISSING values from expList during
calculation of the variance.
SKIPZERO Excludes all zero (0) values from expList during
calculation of the variance.
SKIPBOTH Excludes all zero (0) values and #MISSING values from expList during calculation of the variance.
expList Comma-delimited list of member specifications, variable names, functions,
or numeric expressions. expList provides
a list of numeric values across which the variance is calculated.

Notes

• @VARIANCE is different from @VAR, which calculates the variance
(difference) between two members.
• @VARIANCE assumes that expList represents
a sample of the population. If you want expList to
represent the entire population, use @VARIANCEP.
• @VARIANCE is calculated with the “unbiased” or “n-1″ method.
• @VARIANCE uses the following formula:

Example

The following example is based on the Sample Basic database. Assume
that the Measures dimension contains an additional member, Sales Var. This
example uses the @RANGE function
to generate expList, and calculates the
variance of the sales values for a product family.

```FIX (Product)
"Sales Var" = @VARIANCE(SKIPBOTH,@RANGE(Sales,@CHILDREN(Product)));
ENDFIX```

This example produces the following report:

```                              Jan      New York
Actual        Budget
======        ======
Sales       Colas            678           640
Root Beer        551           530
Cream Soda       663           510
Fruit Soda       587           620
Diet Drinks      #MI           #MI
Product        2479          2300

Sales Var   Product         3687.58       4166.67```