VAR function

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Estimates variance based on a sample.

Syntax

VAR(number1,number2,...)

Number1,number2,... are 1 to 30 number arguments corresponding to a sample of a population.

Remarks

VAR assumes that its arguments are a sample of the population. If your data represents the entire population, then compute the variance using VARP.
Logical values, such as TRUE and FALSE, and text are ignored. If logical values and text must not be ignored, use the VARA function.
VAR uses the following formula:

Example

Suppose 10 tools stamped from the same machine during a production run are collected as a random sample and measured for breaking strength.

St1	St2	St3	St4	St5	St6	St7	St8	St9	St10	Formula	Description (Result)
1345	1301	1368	1322	1310	1370	1318	1350	1303	1299	=VAR([St1], [St2], [St3], [St4], [St5], [St6], [St7], [St8], [St9], [St10])	Variance for the breaking strength of the tools (754.2666667)