Hi,
Earlier I received help form @LivioLanzo to resolve my question on how to structure my data. That worked However ... a new question came up that I cannot seem to resolve. It is about calculating a measure that does NOT do a weighted average :-)
I want to use this measure in a visualisation so that it shows: (in table form)
respondent | questioncategory | question | score | averagebyquestion | averagebyquestioncategory | aveargebyrespondent |
resp1 | cat1 | cat1.1 | 5 | 5 | 5 | 4,5 |
resp1 | cat1 | cat1.2 | 5 | 5 | 5 | 4,5 |
resp1 | cat1 | cat1.3 | 5 | 5 | 5 | 4,5 |
resp1 | cat2 | cat2.1 | 5 | 5 | 4 | 4,5 |
resp1 | cat2 | cat2.2 | 3 | 3 | 4 | 4,5 |
Regardless of the number of questions in a category, each respondent will need to get an average based on the average over all categories. To calculate the total, each category should have one vote. In the example above. The average should be 4,5 as in the table above. I however keep getting 4,6 (the weighted average)
My key problem seems to be how to create a function that iterates not over each row but over a new/filtered? table that contains only the average for a category. Is that at all possible, to use DAX to create a virtual table that contains a subset of rows and columns from the original table as well as the values from a measure?
I even find it difficult to do this in excel so thinking through this problem proves to be harder than I thought it would be - even though the concept seems so straightforward.
Kind regards,
Max
Earlier (resolved) post https://community.powerbi.com/t5/Desktop/Average-of-answer-by-question-with-multiple-value-types/m-p...
Solved! Go to Solution.
Hi @Max_Kloosterman ,
You can add use allexcept to choose which fields filtered formula calculation.
Sample:
Count Measure = CALCULATE ( AVERAGE ( Table[Score] ), ALLSELECTED ( Table ), VALUES ( Table[ColumnName] ) ) Count Measure2 = CALCULATE ( AVERAGE ( Table[Score] ), ALLEXCEPT ( Table, Table[ColumnName] ) )
Regards,
Xiaoxin Sheng
Hi @v-shex-msft
I've tested this solution and it still gives me 4,6 and not 4,5... this is proving to be a hard one. Any other idea's?
To understand it better I've looked at a couple of lessons on The ALL, ALLSELECTED and ALLEXCEPT filters today and am learning more and more. Thanks for that.
One additional question / complication: In my real table respondents are able to score 0 to indicate that they did not want to answer that question. I am trying to figure out where to filter out those values. i.e. where do I insert a filter that ensures only values are considered that fullfil the condition Table[score]<>0? For the interim I have dealt with this by changing all 0 scores to null upon import of the data.
Kind regards,
Max
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