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Null or Missing Data Produces Incorrect Average

Publish Date: Feb 28, 2025
Description
When averaging a field, then the result does not include NULL or missing data

Cause

Aggregations ignore NULL values. The function ZN() converts NULL values into zeros in order to be included in the average.

Resolution
For NULL data, wrap the field in ZN(). For example, the following calculation:
AVG( [Sales] )

Could become:
AVG( ZN( [Sales] ))
 
For missing data it may not always be possible to replace missing values with zeros. Depending on how the view is built it may be possible to achieve the desired results with table calculations. For directions, please see Replace NULL or Missing Data With Zeros or Existing Data
Knowledge Article Number

001473468

Attachments

include NULL in avg.twbx

18 KB

 
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