[GRASS-dev] r.stats.quantile: does the 50th percentile equal to the median?

[nik at nikosalexandris.net]

Hi devs,

does the default `percentiles=50` in `r.stats.quantile` equal to the 
median?
Is the definition exclusive or inclusive?

Thank you for any insight, Nikos
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See also
- https://en.wikipedia.org/wiki/Percentile
- https://math.stackexchange.com/q/2048470/445399