[R] Applying by() when groups have different lengths

Rich Shepard r@hep@rd @end|ng |rom @pp|-eco@y@@com
Mon Sep 17 22:10:16 CEST 2018

On Mon, 17 Sep 2018, Bert Gunter wrote:

>>    I cannot think of a way of proving a sample of data; if a sample for a

   Typo: s/proving/providing/


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