Hello everyone, Sorry if this subject has already been covered in the mailing list but I could not find it.
My question is very simple: should the `quantile` function be added to python `statistics` module. I was very happy to learn the existence of this module in python3 only to later be forced to install numpy to compute a .7 quantile which is even more frustrating since the module actually provides an implementation of the median. I would therefore be willing to submit a PR to add the `quantile` function to the module. The function would have the following signature: ``` # data -> your sequence # p -> the quantile, between 0 & 1 def quantile(data, p) # example quantile([1, 2, 3, 4, 5], 0.5) >>> 3 ``` This would also mean implementing very simply the `quantile_low` & `quantile_high` function as their median counterparts in the module. I am unclear, however, how to implement a hypothetic `quantile_grouped`. What do you think?
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