How to get an accurate aggregate average of a percentage on a line chart?

I have a line chart that shows a percentage across categories (opens/delivered graphed by email campaign). I would like to show which campaigns are above or below average with a line on the graph. Because of the different sizes of the email campaigns I cannot just average the ratios - instead I need to divide all the opens by all the deliveries for filtered data. It seems that the default average in Domo won't do this, but I was able to get the overall average to show as the summary number with this beast mode:
sum(`UniqueOpens`) / sum(`NumberDelivered`)
However I can't seem to get this to show as line on the graph. The blue line is what I want to show while the black line is the average of the ratios.
I want the graphed average to change as the dataset is filtered by end users, so if they want to compare a subset of the campaigns they could see which ones are above/below average of the subset.
Thank you!
Best Answer
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Hi @Sam1
Sounds like you want an average across the entire dataset to compare against. You can utilize a window function to get this and then compare your average to to it.
Overall percentage:
SUM(SUM(`UniqueOpens`)) OVER () / SUM(SUM(`NumberDelivered`)) OVER ()
Putting it all together:
CASE WHEN SUM(`UniqueOpens`)/SUM(`NumberDelivered`) > SUM(SUM(`UniqueOpens`)) OVER () / SUM(SUM(`NumberDelivered`)) OVER () THEN 'Above' WHEN SUM(`UniqueOpens`)/SUM(`NumberDelivered`) < SUM(SUM(`UniqueOpens`)) OVER () / SUM(SUM(`NumberDelivered`)) OVER () THEN 'Below' ELSE 'Same' END
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Answers
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One thing to note, window functions aren't available out of the box, you need to talk with your CSM to get them enabled in your instance.
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careful... unique opens cannot be aggregated over time. that's not really the definition of unique. I think i would push back to the business on this one.
If you measure Unique opens daily. and i open the email 5 times on separate days in the week. do i count once or five times?
Jae Wilson
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