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Sep 16, 2010 10:26 AM
(1324 views)

Is there a simple column formula that will populate the quantile of a value in a different column?

For example:

I have a column with the following values [1,2,3,4,5,6,7,8,9,10]. I would like to create a new column that will simply hold the quantile value of each of the values in my original column.

I tried the quantile function in the Column Properties dialogue, but that doesn't seem to be the answer (or I'm using it incorrectly).

Thanks

2 REPLIES

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Sep 22, 2010 6:28 AM
(1175 views)

You can get close with (Col Rank( : x ) - 1) / (N Row() - 1), but ties are arbitrarily ordered.

The Ranking Tie() function will average ties together, but requires more set-up since it's not a "Col" function.

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Sep 23, 2010 6:00 AM
(1175 views)

Much appreciated. I'll experiment with this. One of my colleagues suggested a workaround which, as it happens, is good enough for what I'm trying to do:

If(:Callback % >= Col Quantile(:Callback %, 0.75), "Upper", "Normal")

Thanks again!

Stefan