Weighted Averages of Summary Data

user13581 · May 2019

Hello!

I am trying to create a pretty simple bar chart visualization based off of sumarry data but with numerous filters. The summary data that looks something like this, where I'm charting the average of X-Y average :

X	Y	N	X-Y Average
0	0	1000	50%
0	1	900	60%
0	2	500	70%
0	3	300	70%
0	4	300	70%
0	5	300	70%
0	6	100	80%
0	7	100	80%
0	8	100	80%
…	…
8	8	1000	50%

The issue I'm having is that the card itself is showing data averaged over X and Y (which is what I want) with quick filters for X and Y so that I can drill down into the data. However, unless the data is drilled down to a single X-Y combo the visualization is an unweighted average. Is there a way to plot the weighted average? I know I could create a weighted average but I can't see how that would work if someone wanted to filter the data down.

Thanks!

Figauro · May 2019

I think what you are wanting will need to be created in beast mode. That way the weighted average beast mode calculation would change based on what is filtered.

ST_-Superman-_ · May 2019

I think it would be something along the lines of...

sum(`N` * `X-Y Average`) / sum(`N`)

Weighted Averages of Summary Data

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