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Percentile calculation by group
giovanni zanocco
Posts: 1
May 18, 2023 - 2:50 am
1
Hi all,
I am struggling with the following problem: I have a sample data set where I need to calculate the n percentile (say 90% percentile) for records pertaining to a given Area (see screenshot). The percentile of each Area should then be reported in an additional column.
Hope the screenshot clarifies the problem.
Thank you
giovanni
Catalin Bombea
Iasi, Romania
Posts: 1824
May 25, 2023 - 2:42 pm
2
Hi Giovanni,
Try this query:
let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Added Custom" = Table.AddColumn(Source, "Grouped", (x)=> List.Sum(Table.SelectRows(Source, each _[Area] = x[Area])[Custom.Peso])),
#"Added Custom1" = Table.AddColumn(#"Added Custom", "Percent", each [Custom.Peso]/[Grouped], Percentage.Type)
in
#"Added Custom1"
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Added Custom" = Table.AddColumn(Source, "Grouped", (x)=> List.Sum(Table.SelectRows(Source, each _[Area] = x[Area])[Custom.Peso])),
#"Added Custom1" = Table.AddColumn(#"Added Custom", "Percent", each [Custom.Peso]/[Grouped], Percentage.Type)
in
#"Added Custom1"
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