By the way..I don?t see why it is relatively easy to show that Yi is
normally distributed..(in fact, the Y variable is count so it should be
poisson). This is in section 5.4 (p. 112) of Zuur et al (2009).
Thanks,
joaqu?n.
2016-07-12 10:52 GMT-03:00 Thierry Onkelinx <thierry.onkelinx at inbo.be>:
Dear Joaquin,
Yes. I think you have found a typo. The prior to equation 5.13 should
read "It is relatively easy to show that $Y_i$ is normally distributed
..."
Best regards,
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey
2016-07-11 21:36 GMT+02:00 Joaqu?n Aldabe <joaquin.aldabe at gmail.com>:
Sorrry, I hadn?t copied the whole group. Here it goes: Thanks Thierry,
I?ve been there a couple of times. I?ll try again. I think there is a
mistake in page 112 when says: It is relatively easy to show that Vi is
normally distributed with mean X i ? ? and variance V i in mathematical
notation...
It should say Yi instead of Vi, right?
Cheers,
Joaqu?n .
2016-07-08 9:02 GMT-03:00 Thierry Onkelinx <thierry.onkelinx at inbo.be>:
Dear Joaquin,
I'd recommend Zuur et al 2009, section 5.4
Best regards,
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
To call in the statistician after the experiment is done may be no
more than asking him to perform a post-mortem examination: he may be able
to say what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body of
data. ~ John Tukey
2016-07-07 20:17 GMT+02:00 Joaqu?n Aldabe <joaquin.aldabe at gmail.com>:
Dear all, I?m a basic user of mixed models but there are things that
I?ve
found hard to understand. On of these is how the model solves the
correlations among samples taken in the same site or levels of other
kind
of grouping variable.
I?ve consulted Bolker (2015) in G. Fox et al Ed., Zuur et al 2009 and
part
of Pinheiro and Bates (2000). But still don?t understand the way that
GLMM
include the correlation effect in the predictions of the model.
I really appreciate any comment and/or bibliographic reference that
help me
understand this.
Thanks in advanced,
Joaqu?n.
--
*Joaqu?n Aldabe*
*Grupo Biodiversidad, Ambiente y Sociedad*
Centro Universitario de la Regi?n Este, Universidad de la Rep?blica
Ruta 15 (y Ruta 9), Km 28.500, Departamento de Rocha
*Departamento de Conservaci?n*
Aves Uruguay
BirdLife International
Canelones 1164, Montevideo
https://sites.google.com/site/joaquin.aldabe
<https://sites.google.com/site/perfilprofesionaljoaquinaldabe>
[[alternative HTML version deleted]]