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VARPA

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Calculates variance based on the entire population. In addition to numbers, text and logical values such as TRUE and FALSE are included in the calculation.

Syntax

VARPA ( value1 ,value2, ...)

Value1,value2,... are 1 to 30 value arguments corresponding to a population.

Remarks

  • VARPA assumes that its arguments are the entire population. If your data represents a sample of the population, you must compute the variance using VARA.

  • Arguments that contain TRUE evaluate as 1; arguments that contain text or FALSE evaluate as 0 (zero). If the calculation must not include text or logical values, use VARP instead.

  • The equation for VARPA is :

    Cc723030.ZA060512581033(en-us,TechNet.10).gif

Example

Suppose all 10 tools stamped from the same machine during a production run are collected 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

=VARPA([St1], [St2], [St3], [St4], [St5], [St6], [St7], [St8], [St9], [St10])

Variance of breaking strengths for all the tools, assuming that only 10 tools are produced (678.84)

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