Year over year cumulative average
I am trying to create a line chart with the year as a series. The data points are per month with a cumulative average.
Data:
Year Month Closed Cases Total Cases % Cumulative % (Cum. Math)
2022 1 50 100 50% 50% (50/100)
2022 2 100 150 75% 60% (150/250)
2023 3 100 100 100% 71.43% (250/350)
etc. across multiple years where each year resets the starting point at month 1.
I then would create a line graph ordered by Month plotting the cumulative % with the year as a series.
I am having trouble calculating the cumulative average for each year. When Group the Y/M data the calculation is only based on the given Y/M, not Y + all months so far that year.
thanks in advance for any assistance.
Best Answer
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You can use a window function to keep a running total and then divide them
SUM(SUM(`Cases Closed`)) OVER (ORDER BY `Year`, `Month`) / SUM(SUM(`Total Cases`)) OVER (ORDER BY `Year`, `Month`)
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Answers
-
You can use a window function to keep a running total and then divide them
SUM(SUM(`Cases Closed`)) OVER (ORDER BY `Year`, `Month`) / SUM(SUM(`Total Cases`)) OVER (ORDER BY `Year`, `Month`)
**Was this post helpful? Click Agree or Like below**
**Did this solve your problem? Accept it as a solution!**1 -
I need to spend more time looking at the Window function to see if understand how to do this. Thanks for giving me direction.
0 -
Thanks, Grant. The solution worked.
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