How To Calculate Variance In Power Bi

How to Calculate Variance in Power BI

Variance is a statistical measure that represents the spread between numbers in a dataset. In Power BI, you can calculate variance using the VAR function. Here’s how:

1. Ensure you have a dataset imported or connected to Power BI containing the necessary numerical data.
2. Create a new measure by going to the “Modeling” tab in the Power BI Desktop.
3. Click on the “New Measure” button in the “Calculations” group.
4. In the formula bar, enter the following expression to calculate variance:

           
             Variance = VAR(column_name)
           
         

   Replace column_name with the actual name of the column in your dataset that you want to calculate the variance for.

5. Press Enter to evaluate the formula.
6. Power BI will calculate the variance based on the selected column and display the result in the measure.

Here’s an example:

Dataset:

Calculating Variance:

    
      Variance = VAR(Sales)
    
  

Result:

The calculated variance for the given dataset would be displayed in the measure.