Measure to count text values in a column

[Mahamil2]

Hello.  I am new to Power BI & DAX.  I am using Power BI to create visualizations based on the results of Quality Assurance tests I have performed.  My data set consists of a list of vendors and various test elements which receive either a "Yes", "No" or "n/a" rating.   I would like to create a measure that counts the # of times Yes and n/a occur in each column. 

I will then be dividing that # by the total # of vendors tested (or total rows) in order to obtain a score. 

In Excel i used the following formula, =SUMPRODUCT(COUNTIF(B2:B12,{"Yes","n/a"}))/COUNTA(B2:B12)  but cannot figure out a similar formula to use in Power BI.  Additionally, in Excel I was able to copy and paste this formula to each column to calculate a score for each test element; is there a way to create a measure in Power BI and apply it to each test element/column or would i need to create a measure for each column?

Thank you for any help you can provide  🙂

[MariaP · Accepted solution]

After importing your data perform transformations via the backend.

Unpivot all the Element columns (Select Vendor the use Unpivot all others)

in Advanced Grouping - > group by Vendor and Result

This will give you the final Count you are after

Downlaod Sample PBIX: Vendor Download

[Mahamil2]

Thank you Maria!  This provided the solution i needed.