Displaying 2 results from an estimated 2 matches for "kurtotic".
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kurtosis
2009 Apr 06
3
how to subsample all possible combinations of n species taken 1:n at a time?
...of 11 taxa taken 1:11 at a time is 2048, all
combos of 12 taken 1:12 is 4096, 13 taken 1:13 = 8192...etc etc such that
when I reach about 25 taken 1:25 the number of combos is 33554432 and I get
a memory error.
I have found that the number of combos of x taxa taken from a pool of n
creates a very kurtotic unimodal distribution,...
x<-vector("integer",20)
for (i in 1:20) {x[i]<-choose(20,i)}
plot(x)
...but have found that limiting the number of samples for any community size
to 1000 is good enough for the further analyses I wish to do.
My problem lies in sampling all possible combo...
2012 Nov 29
1
QQplot
Hi!
<http://r.789695.n4.nabble.com/file/n4651293/qq.png>
We are stuck with a problem considering the qqplot of a dataset.
We are trying to discover what kind of distribution this is. We already
tried to normal, exponential or the logaritmical distribution but none of
those are able to solve our problem. Is there someone able to tell us what
kind deformation we should try?
(I'm