I am trying to understand why Tableau computes the value "398" for week 52 with the calculation of "75% Percentile" combined with "Moving Calc." (red arrow in the table screenshot) .
The "simple" 75% percentile of week 52 matches my check in excel.
But the check of the "75% Percentile" combined with "Moving Calc." does not match at all.
If I cross check the raw data in excel the I would expect a value of 129.
What is wrong in my calculation?
Answer to myself --> use Average but WHY ????
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