Displaying 20 results from an estimated 300 matches similar to: "Fisher's LSD and tukey output thing"
2010 Mar 06
1
TukeyHSD model thing
Hi,
I am trying to reproduce a tukey test in R
==========================
x=c(145,40,40,120,180,
140,155,90,160,95,
195,150,205,110,160,
45,40,195,65,145,
195,230,115,235,225,
120,55,50,80,45
)
y2=c(
rep(as.character(1),5),
rep(as.character(2),5),
rep(as.character(3),5),
rep(as.character(4),5),
rep(as.character(5),5),
rep(as.character(6),5)
)
crd2=data.frame(x,y2)
2010 Mar 07
3
barplot with factors problem
http://www.harding.edu/fmccown/R/#autosdatafile
http://www.harding.edu/fmccown/R/#autosdatafile
I am tring to get a barchat by factors,
following the example in that link above.
===========================
x=c(145,40,40,120,180,
140,155,90,160,95,
195,150,205,110,160,
45,40,195,65,145,
195,230,115,235,225,
120,55,50,80,45
)
y2=c(
rep(as.character(1),5),
rep(as.character(2),5),
2012 Apr 03
1
Fisher's LSD multiple comparisons in a two-way ANOVA
Hi there,
Is there a function that can do a Fisher's LSD multiple comparisons in a
two-way ANOVA? I hope to get a result similar with TukeyHSD().
Especially, I hope to know the significance of comparisons between the
interactions of two factors.
In the following example:
x <- c(76, 84, 78, 80, 82, 70, 62, 72, 71, 69, 72, 74, 66, 74, 68, 66,
69, 72, 72, 78, 74, 71, 73, 67, 86, 67, 72,
2011 Jul 08
0
Efectos aleatorios, interaccions y SNK, LSD o Tukey a claración de las datos
Hola de nuevo R-Users,
me he dejado cosas para aclara.
Primero de todo tengo cinco repeticiones y 20 missings, así que mi n
es de 5×10×3×5-20= 730 datos en total, todos los grupos tienen al
menos 3 representantes.
Segundo: Las variables estudiadas son Producción neta, Peso de 100
semillas y Proteína.
Tercero: Observo los mismos genotipos (G) en varios años (A) en las
misma localidades
2011 Jul 08
3
Efectos aleatorios, interaccions y SNK, LSD o Tukey
Queridos R-users:
Tengo una duda que hace mucho tiempo que estoy intentando resolver, os
explico a modo de ejemplo:
Tengo estos efectos: Año(5 niveles),Localidad (10 niveles) y genotipo
(3 niveles), año y localidad son aleatorios y genotipo es fijo (los he
escogido yo).
Me gustaría hacer obtener una tabla parecida a la Tabla Anova donde
aparezca cada factor y sus interacciones y
2017 Dec 25
2
LSD-test
LSD-test produces error for this code;
code <- as.factor(Rotationdata_R$`Rot/code`) #factor in the main
Nitrogen <- as.factor(Rotationdata_R$Nitrogen) #factor in the sub
Rep <- as.factor(Rotationdata_R$REP) #blocks
Year <- as.factor(Rotationdata_R$YEAR) #years
model <- aov(Rotationdata_R$`GY(Mg/ha)`~Rep+code*as.factor(Nitrogen)+Error(Rep/Year/code),data=Rotationdata_R)
2017 Dec 25
0
LSD-test
> On Dec 25, 2017, at 10:21 AM, Ahmed Attia <ahmedatia80 at gmail.com> wrote:
>
> LSD.test
?LSD.test
No documentation for ?LSD.test? in specified packages and libraries:
you could try ???LSD.test?
--
David Winsemius
Alameda, CA, USA
'Any technology distinguishable from magic is insufficiently advanced.' -Gehm's Corollary to Clarke's Third Law
2017 Dec 25
0
LSD-test
> On Dec 25, 2017, at 2:09 PM, Ahmed Attia <ahmedatia80 at gmail.com> wrote:
>
> The model should be class aov or lm and my model class is aovlist.
> tried tidy from broom library but did not work. To make it class aov,
> I had to remove the error term;
>
> model <- aov(Rotationdata_R$`GY(Mg/ha)`~Rep+code*as.factor(Nitrogen),data=Rotationdata_R)
You seemed to have
2011 Oct 21
1
Multiple factorial comparison LSD
Please help. I really like R and I have been looking at how to do LSD multiple comparison test with data that has more than one factor. So far, I am unsuccessful. Please help!
Me
2007 Jan 29
1
Fwd: Re: LSD multiple comparison test
I am returning this to the R-help list. Please keep followups on the list.
Yes, it can be done. It is not currently easy because multcomp doesn't
have the syntax yet. Making this easy is on Torsten's to-do list for the
multcomp package.
See the MMC.WoodEnergy example in the HH package. The current version on CRAN
is HH_1.17. Please see the discussion of this example in R-help:
2017 Dec 25
2
LSD-test
The model should be class aov or lm and my model class is aovlist.
tried tidy from broom library but did not work. To make it class aov,
I had to remove the error term;
model <- aov(Rotationdata_R$`GY(Mg/ha)`~Rep+code*as.factor(Nitrogen),data=Rotationdata_R)
Ahmed Attia, Ph.D.
Agronomist & Soil Scientist
On Mon, Dec 25, 2017 at 7:38 PM, David Winsemius <dwinsemius at
2008 Aug 26
2
Do I need a special package to run LSD tests?
Hi there,
I am trying to run LSD.test(model)
I used the following commands:
attach(model)
m1<- glm(ttl.m ~ site+year, family=quasipoisson, data= model)
df<-df.residual(m1)
MSerror<-deviance(m1)/df
The following command did not work:
comparison<- LSD.test (ttl.m, site+year, df, MSerror, alpha = 0.05,
group=FALSE)
I get an error message: Error: could not find function
2010 May 12
1
fisher's posthock test or fisher's combination test
Hi to all
is there a fisher's post hock test or fisher's combination test in R
available?
Maybe not -- its very easy to do it in excel ...
Kind regards Knut
2007 Jul 16
3
LSD, HSD,...
Hi,
I'm designing a experiment in order to compare the growing of
several clones of a tree specie. It will be a complete randomized block
design. How can I decide what model of mean comparision to choose? LSD,
HSD,TukeyHSD, Duncan,...? Thanks in advance
2005 Sep 12
0
Multiple comparisons like a Chi2 or Fisher's exact test
Dear all
I have an experiment where plots either have or have not regrown (in 40
plots) after receiving 12 different herbicide treatments and a control (no
treatment). The data are significant with a Chi2, but to later distinguish
if the differences are significant between each of the 12 treatments apart I
need to do multiple Chi2 s between each. Is there a way to run those
multiple Chi2 or
2005 Sep 05
2
Fisher's method in discriminant analysis
Hi,
I'm using mda library to solve a discriminant
analysis. I get results, but the thing is that I want
to use Fisher's method to obtain the classification
functions and I'm lost in what I should do: libraries
to use, ... Can anybody give me a clue??
Thanks.
Carlos Niharra L??pez
2006 Jul 11
1
Table of P values for Fisher's exact test
Hi,
I have a table of observed counts for various genetic markers. Instead of
doing Fisher's exact test for each marker one at a time and recording the P
value manually, is there a script to go through the whole list and generate
the P value column automatically?
An example of my data:
Counts_CHB and Counts_AA are the observed counts for one allele.
2N_CHB and 2N_AA are the total number
2011 Jan 18
1
Choosing statistical test - Fisher's Exact Test?
Hi I was wondering whether anyone can help me with this problem....it's been
driving me nuts, I've been trying to figure it out for months and months
without success!! Basically I have a group of participants who attended 2
experimental sessions a few months apart. I took measures of the way they
approach two tasks at Time 1 and the same two tasks at Time 2. I have
categorical data (a
2011 Apr 01
1
Fisher's test
I have a matrix with 2 columns and I want to do fishers exact test for these
with the totals for each row being 100 say.
The data has the form:
23 12
32 21
12 2
and these represents the tables:
23 12
77 88
32 21
78 79
12 2
88 98
How do I use apply to speed up aclculation of the fisher.exact test?
--
Thanks,
Jim.
[[alternative HTML version deleted]]
2011 Apr 13
1
Previously attainable fisher's exact test
I have a matrix say,
1 4
23 30
and I want to find the previously attainable fisher's exact test p-value. Is
there a way to do this in R?
--
Thanks,
Jim.
[[alternative HTML version deleted]]