[R] In fact this is a Stats question, but... "The return."

[Peter Dalgaard]

eesteves at ualg.pt wrote:
> *Thanks* all those who took the time to help me (even if the 
> "question" was not related to - the use of - R).
>
> Now I think I can soundly make my point w/ the referee (can I use your 
> replies? If so I intend to properly cite its use?!?).
In general, I think it is best not to cite this kind of replies, at 
least not in publications. Steve E's note is a bit of an eye-opener in 
that regard: There could in fact be serious problems in your analysis 
without respondents realizing it (e.g., you could have 1700 larvae, but 
they came from only 10 batches of eggs with a strong within-batch 
correlation). Judging from the text below I wouldn't expect that this is 
the case, but the risk is there. The general problem is that it is very 
difficult to give credit without also assigning some level of 
responsibility.

    -pd
>
> Regards, Eduardo Esteves
>
> ps - Sorry for not explaining the "biological details" of my posting: 
> RNA/DNA is the ratio of RNA content to DNA content obtained for 
> individual fish larvae (plus for each one I noted if it had visible 
> prey items in the gut or not, thus the levels Prey and Empty of factor 
> Gut); and sl is the standard length (distance from the tip of snout to 
> the posterior extremity of the hypurals, the expanded bones at the end 
> of the backbone that support the caudal fin, in mm) of the specimens. 
> In the MS, I consider the relationship RNA/DNA to sl to be 
> biologically irrelevant (due to the very low r2) although 
> statistically significant. Furthermore, no effect of gut content upon 
> that relationship is significant (facilitating further analysis of 
> pooled data).
>
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-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
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