[RkWard-devel] Desc stats skweness and kustosis

[I. Soumpasis]

Hi!

Today I wanted to do some descriptives and see skewness and kusrtosis tests.
Usually I used the stat.desc function from the pastecs library. I attach a
pdf file with the results of

rk.print(xtable(stat.desc(count, basic=T, desc=T, norm=T, p=0.99), digits=
5))

In the pdf file there is also the results of the descriptives plugin (which
are the same).

In the pdf file there is also the results of the moments>skewness and
kusrtosis plugin which gives different results.

Also tried the e1071 library which gives
kurtosis(count)
[1] -0.03791842

skewness(count)
[1] -0.439146

which are the results from the stat.desc function.

1. Why is this difference? My data does not contain NAs as you can see.
2. Although a descriptives plugin exists, how do you see the idea of using
the stat.desc additionally? Seems to me more informative, but the user
looses the choice to choose only one thing eg, mean or median.

Regards,
Ilias
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