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Re: Basic calculation mistakes (e.g. mean/median)


From: Shawn Wagner
Subject: Re: Basic calculation mistakes (e.g. mean/median)
Date: Tue, 10 Nov 2020 05:42:22 -0800

Which of those are wrong and what should it be getting for them?

On Tue, Nov 10, 2020 at 5:28 AM Andreas Sommer <andreas.sommer87@googlemail.com> wrote:
Hi,

I just started using datamash on a small dataset and noticed its calculations are off. And indeed it doesn't calculate basics correctly. Or it somehow depends on the type of display (see below argument combinations):

---

$ seq 1 3 | datamash mean 1 median 1
2       2

$ seq 1 3 | datamash -H mean 1 median 1
mean(1) median(1)
2.5     2.5

$ seq 1 3 | datamash -R 5 -H mean 1 median 1
mean(1) median(1)
2.50000 2.50000

---

$ seq 1 4 | datamash -H -R 2 mean 1 median 1
mean(1) median(1)
3.00    3.00

$ seq 1 4 | datamash -R 2 mean 1 median 1
2.50    2.50

$ seq 1 4 | datamash mean 1 median 1
2.5     2.5

---

Until that gets fixed, it means I can't trust the tool :(

Cheers,
 Andreas


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