Grouped average with Slicers gives wrong values

[JasonFurtner]

Hi everyone.

I have a data set that looks like this:

AssemblyName	ProcessStep	SerialNumber	TouchTime	Date
Assembly1	Build	N001	30	3/1/2023
Assembly1	Build	N002	35	3/2/2023
Assembly1	Build	N003	25	3/3/2023
Assembly2	Build	N004	40	3/1/2023
Assembly2	Test	N004	50	3/1/2023
Assembly2	Measure	N004	20	3/2/2023
Assembly2	Build	N005	35	3/2/2023
Assembly2	Test	N005	45	3/2/2023
Assembly2	Measure	N005	30	3/4/2023

I am looking at the touch time for various assembly processes on the manufacturing line. Some assemblies only have one process step, while others have more than one. 

When I use a slicer to look at the touch time data for one assembly, and one process step, the average appears to work correctly.

But when I try use a slicer to look at the touch time for multiple process steps, the totals are still correct but the average goes down. I believe this is because it is taking the total sum and then dividing by the total number of steps. What I want is for it to take the average of each individual process step and then add those averages together. 

[Ashish_Mathur]

Hi,

On the data that you have shared, show the expected result.

[v-tangjie-msft · Accepted solution]

Hi @JasonFurtner ,

According to your description, here are my steps you can follow as a solution.

(1)  My test data is the same as yours.

(2) We can create a measure. 

Average Touch Time = SUMX( VALUES('Table'[ProcessStep]), AVERAGE('Table'[TouchTime]) )

(3) Then the result is as follows.

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. Thank you.

Best Regards,

Neeko Tang

If this post  helps, then please consider Accept it as the solution  to help the other members find it more quickly. 

[JasonFurtner]

Thanks that works perfectly!