How to do an average of multiple columns?

[MichalHoltz]

I have 3 columns and would like to get the average of 3 of them. How do I do that?

App1	App2	App3
1	2	1
3	2	1
2	3	5
3	4	5
5	4	3
2	5	4

[dang]

To be fair, dividing the sum of averages by the number of averages skews the data if each average does not contain the same number of records. In my mind, a more exact method would look something like (Sum(Table2[SAP SRM Functionality]) + Sum(Table2[SAP SRM Productivity]) + Sum(Table2[SAP SRM Quality]) + Sum(Table2[SAP SRM Support])) / (Countrows(Table2[SAP SRM Functionality]) + Countrows(Table2[SAP SRM Productivity]) + Countrows(Table2[SAP SRM Quality]) + Countrows(Table2[SAP SRM Support]))

[tjm4q2]

You are the only one correct on this thread -- notwithstanding missing values that saturate your counts, taking the average of the summation of averages (otherwise known as the mean of means) IS NOT the same as taking the average of two columns worth of data; there are actually three common ways to take the average when using multiple columns and @dang has utilized the most correct way.

[tjm4q2]

Update: An even more correct way using DAX would be to use a summarize(sumx()) statement.

[pangelidis]

Sumx doesn't work on variable tables

[jimmy66]

I have the same issue i want to add columns , but the average should only be for columns that have a value , i can't see what answer was proposed

[Anonymous]

I don't know the full model, but wouldn't it make more sense to change the datamodel into a thin fact table with App1-3 as a category, instead of building measures like this?

Would seem to be more alligned with best practice.

[vanessafvg]

@MichalHoltz

create a measure;

measure = average(sum(col1) + sum(col2) +sum(col3))

[MichalHoltz]

Thanks. I tried this but I get an error message- The AVERAGE function only accepts a column reference as an argument

What am I missing (I'm new to Dex)?

Measure = AVERAGE(SUM(Table2[SAP SRM Functionality])+SUM(Table2[SAP SRM Productivity])+SUM(Table2[SAP SRM Quality])+SUM(Table2[SAP SRM Support]))

[vanessafvg · Accepted solution]

@MichalHoltz you right!

what about 

(AVERAGE(Table2[SAP SRM Functionality])+average(Table2[SAP SRM Productivity])+average(Table2[SAP SRM Quality])+average(Table2[SAP SRM Support]))/4?

[AleksandrMe]

This doest work if one value is missed or 0 - may be any solutuon for that?

thnaks

ALeks

[Cre8]

Exactly. Is there a way to solve this problem? Have the same problem!

[Anonymous]

@vanessafvg 

Is there a way of averaging multiple columns via range instead of listing them all?

[Anonymous]

Thanks it worked

[MichalHoltz]

@vanessafvg it works! Thanks a lot!!