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

[Andreas Sommer]

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