Calculate Average for Common Columns in Matrix

[tylerr2142]

I would like to calculate the average of the baseline assessment for just the common standards. In this case, it should be the average of 7.1, 7.2 and 7.3. I would also like to calculate (nonbaseline) exam score for common standards. Again, just 7.1, 7.2 and 7.3. These will go into single value cards to show improvement from common standards.

	3.1	3.2	3.3	7.1	7.2	7.3	7.4	7.5	10.2
Baseline Exam	80%	60%	100%	40%	80%	100%			100%
101 Exam				100%	25%	100%	75%	100%

Unfortunately, I cannot share the PBIX file due to confidential exam data.

Thanks in advance!

[v-shex-msft]

Hi @tylerr2142,

I also think share some same data will help us clarify your data structure and test to coding formula.

In fact, we do not need the real data, you can keep the raw table structure and build some dummy data to share. (e.g. use random value to replace the raw numerical values, replace sensitive string with test,123...)

How to Get Your Question Answered Quickly 

BTW, where did these common standards from? Based on calculations or specific by filters?

Regards,

Xiaoxin Sheng

[tylerr2142]

@amitchandak @v-shex-msft 
The data structure looks like the below:

Username	AttemptDate	Exam	Section	Score
Sally	1/1/2020	Baseline	1.1	50%
Sally	1/1/2020	Baseline	1.2	25%
Sally	1/1/2020	Baseline	1.3	100%
Sally	1/1/2020	English 101	1.1	75%
Sally	1/1/2020	English 101	1.2	80%
Sally	1/1/2020	English 101	1.4	90%
Sally	1/1/2020	English 101	1.7	95%

I want to be able to calculate the improvement from Baseline exam to other Non-Baseline exams with identical sections. (I.E: a score of 50% for baseline section 1.1 to the 75% for English 101 section 1.1. 

Thanks for the help!

[v-shex-msft]

Hi @tylerr2142,

Did you mean you want to calculate the average 'Score' across multiple exams based on the most general 'Section' which existed all exams, right?

If that is the case, you can try to use the following measure expression to replace the scope field to use in matrix and confirm if it works on your side:

Measure = 
VAR currSelection =
    MAX ( 'Table'[Section] )
VAR _list =
    CALCULATETABLE (
        VALUES ( 'Table'[Section] ),
        FILTER (
            SUMMARIZE (
                ALLSELECTED ( 'Table' ),
                [Username],
                [AttemptDate],
                [Section],
                "cExam", COUNTA('Table'[Exam])
            ),
            [cExam] >= 2
        )
    )
RETURN
    IF (
        currSelection IN _list,
        CALCULATE (
            AVERAGE ( 'Table'[Score] ),
            ALLSELECTED ( 'Table' ),
            VALUES ( 'Table'[Username] ),
            VALUES ( 'Table'[AttemptDate] ),
            VALUES ( 'Table'[Section] )
        )
    )

Regards,
Xiaoxin Sheng

[amitchandak]

@tylerr2142 , are these column ?

7.1, 7.2 and 7.3

The information you have provided is not making the problem clear to me. Can you please explain with an example.
Can you share sample data and sample output in table format? Or a sample pbix after removing sensitive data.
Appreciate your Kudos.