DAX STDEV Function

The STDEV function in Power BI's Data Analysis Expressions (DAX) language calculates the standard deviation of a set of numbers in a column or a table expression. Standard deviation is a measure of the dispersion or variability in a dataset. It tells you how spread out the numbers are from the mean (average).

Syntax:

STDEV.P(<column>)

<column>: This is the column from which you want to calculate the standard deviation.

Example:

Let's say you have a table named Sales with the following data:

To calculate the standard deviation of revenue from this data using the STDEV function in Power BI's DAX, you would use the following expression:

StDevRevenue = STDEV.P(Sales[Revenue])

When you use this DAX expression, it will return the standard deviation of the revenue values from the Revenue column, which quantifies the amount of variation or dispersion in the dataset.

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