[R-sig-eco] Neighbor sampling is random?
Kingsford Jones
kingsfordjones at gmail.com
Sat Jul 4 18:55:57 CEST 2009
This may help a bit with intuition. Think about randomly picking a
spot in the box below and then choosing the nearest neighbor. What's
the inclusion probability for 1? What about 6? Clearly not a simple
random sample...
-----------
|123 |
|456 |
| |
| |
-----------
hth,
Kingsford Jones
2009/7/4 Paulo Inácio de Knegt López de Prado <prado at ib.usp.br>:
> Dear r-eco-list users,
>
> This is not an R-question, but a statistical one, but maybe somebody can help.
>
> I had read that to set random points over an area and picking the nearest
> plant is not random sample, but I could not recover this article.
>
> Is that correct? Could you provide some basic reference?
>
> Thanks a lot
>
> Paulo
>
> --
> Paulo Inácio de Knegt López de Prado
> Depto. de Ecologia - Instituto de Biociências - USP
> Rua do Matão, travessa 14, nº 321
> Cid. Universitária, São Paulo - SP
> CEP 05508-900
> 11-30917599 (sala)
> 11-30917600 (Secretaria)
>
> _______________________________________________
> R-sig-ecology mailing list
> R-sig-ecology at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
>
More information about the R-sig-ecology
mailing list