I have a power bi dataset that is calculating the average of our rental systems. I believe this value is correct. However when you export the data and sum it, it does not sum to 28.63. It Sums to 35.04 which is not correct.
Can anyone explain to me why?
Very confused 🙂
I show you a simple example.
Step 0: I use this data below.
Step 1: I get the data with Power BI Desktop and make a measure below.
Weight Avg = AVERAGE('Weight'[Weight kg])
Step 2: I make a matrix.
In this matrix, "53.33" is not a 'Simple average' of "75 and 42.5". (53.33 = (70+80+40+50+45+35)/6)
In this matrix, 'Total' doesn't mean 'Sum of 75 and 42.5' but 'Average of weight of 6 persons'.
I show you a simple example.
Step 0: I use this data below.
Step 1: I get the data with Power BI Desktop and make a measure below.
Weight Avg = AVERAGE('Weight'[Weight kg])
Step 2: I make a matrix.
In this matrix, "53.33" is not a 'Simple average' of "75 and 42.5". (53.33 = (70+80+40+50+45+35)/6)
In this matrix, 'Total' doesn't mean 'Sum of 75 and 42.5' but 'Average of weight of 6 persons'.
Helpful resources
Power BI Monthly Update - April 2026
Check out the April 2026 Power BI update to learn about new features.
Data Days 2026 coming soon!
Sign up to receive a private message when registration opens and key events begin.
New to Fabric Survey
If you have recently started exploring Fabric, we'd love to hear how it's going. Your feedback can help with product improvements.
Power BI DataViz World Championships - June 2026
A new Power BI DataViz World Championship is coming this June! Don't miss out on submitting your entry.
| User | Count |
|---|---|
| 36 | |
| 33 | |
| 31 | |
| 24 | |
| 18 |
