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Filtering Out Data More Than N Standard Deviations From the Mean

Publiseringsdato: Apr 28, 2025
Trinn
The calculation needed to filter data outside of N standard deviations of the mean will depend on how the data is organized and what is used for the 'population'. To filter data outside of 2 standard deviations in a simple view, you can use a calculation similar to the following, where N was equal to 2:
  [Sales]>={ FIXED :AVG([Sales])-N*STDEV([Sales])} AND [Sales]<={ FIXED :AVG([Sales])+N*STDEV([Sales])}

See the attached packaged workbook (.twbx) for an example.

Flere ressurser
An EXCLUDE LOD can likely be used in place of FIXED. If FIXED is used, keep in mind Tableau's order of operations.
Knowledge-artikkelnummer

001458052

Vedlegg

Filtering With STD Dev.twbx

1235 KB

 
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