WILEY.EXCEL.DATA.ANALYSIS.FOR.DUMMIES.2ND.EDITION.2014 by Unknown

Author:Unknown
Format: epub
ISBN: 9781118898086
Published: 0101-01-01T00:00:00+00:00

The DVAR function, which appears in cell F3, is

=DVAR(A1:C11,"Golf Score",A14:C17)

and it returns the sample variance of the golf scores shown in the database list for golfers who golf at Snohomish, Snoqualmie, or Carnation. The actual function result is 161.26786.

The DVARP function, which appears in cell F5, is

=DVARP(A1:C11,"Golf Score",A14:C17)

and it returns the population variance of the golf scores shown in the database list for golfers who golf at Snohomish, Snoqualmie, and Carnation. The actual function result is 141.10938.

As when making standard deviation calculations, you don’t simply pick one of the two database variances based on a whim, the weather outside, or how you’re feeling. If you’re calculating a variance using a sample, or subset of items, from the entire data set, or population, you use the DVAR function. To calculate a variance using all the items in the population, you use the DVARP function.

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