Customize quantile in DataFrames Combine summary

Specific Domains Statistics
2

Thanks for posting! welcome to Julia and to using data frames.

First, note that you can use describe to get the statistics you want by doing.

combine(describe, groupby(df, :Age_Catg))

what you want is an anonymous function.

print(
    combine(gd, nrow 
        ,:Income => mean
        ,:Income => middle
        ,:Income => t -> quantile(t, .1)
    )
)
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