Dear list members,
I need some help in understanding whether I am doing correctly a binomial
logistic regression and whether I am interpreting the results in the
correct way. Also I would need an advice regarding the reporting of the
results from the R functions.
I want to report the results of a
sults and their
> presentation. Again your text seems to as good as any other.
>
>
>
> You should keep responses to mailing list as others could have another
> opinion.
>
>
>
> Cheers
>
> Petr
>
>
>
>
>
> *From:* Frodo Jedi
> *Sent:* Monday, Nove
nt
> at the 5% level, which can be inferred from glm output. Your last two
> wald.tests don't test what you want to, since your model contains an
> intercept term. You specified contrasts which tests A vs B-A, ie A-
> (B-A)==0 <-> 2*A-B==0 which is not intended I think. Have a lo
usion in online
> forums like this that cannot provide the close back and forth that may be
> required (as well as further appropriate study).
>
> Best,
> Bert
>
> On Mon, Nov 12, 2018 at 11:09 AM Frodo Jedi <
> frodojedi.mailingl...@gmail.com> wrote:
>
>> Dear
Dear all,
I need an help because I don´t know how to perform the analysis in the right
way, as I get different beheaviors using t-test and two ways ANOVA.
In what follow I post the table, my goal and the strange results I got.
I kindly ask you an help because I really don´t know how to solve
istics ;-(
Anyway I am doing my best to study and understand.
Please enlighten me.
Thanks in advance
Best regards
________
From: Tal Galili
To: Frodo Jedi
Cc: r-help@r-project.org
Sent: Wed, January 5, 2011 10:15:41 AM
Subject: Re: [R] t-test or ANOVA...who wins
Dear all,
I would like to know which is the right way to check the normality assumption
for performing ANOVA. How do you check normality for the following example?
I did an experiment where people had to evaluate on a 7 point scale, the
degree
of realism of some stimuli presented in 2 condit
Dear all,
I have 3 models (from simple to complex) and I want to compare them in order to
see if they fit equally well or not.
From the R prompt I am not able to see where I can get this information.
Let´s do an example:
fit1<- lm(response ~ stimulus + condition + stimulus:condition, data=scrd)
r-help-boun...@r-project.org [mailto:r-help-boun...@r-
> project.org] On Behalf Of Frodo Jedi
> Sent: Wednesday, January 05, 2011 10:10 AM
> To: r-help@r-project.org
> Subject: [R] Comparing fitting models
>
>
> Dear all,
> I have 3 models (from simple to complex) and I want
Dear Robert,
thanks so much!!! Now I understand!
So you also think that I have to check only the residuals and not the data
directly.
Now just for curiosity I did the the shapiro test on the residuals. The problem
is that on fit3 I don´t get from the test
that the data are normally distribuited.
r-help-boun...@r-project.org [mailto:r-help-boun...@r-
> project.org] On Behalf Of Frodo Jedi
> Sent: Wednesday, January 05, 2011 10:10 AM
> To: r-help@r-project.org
> Subject: [R] Comparing fitting models
>
>
> Dear all,
> I have 3 models (from simple to complex) and I want
Dear All,
I have a problem in understanding how the interactions of 2 ways ANOVA work,
because I get conflicting results
from a t-test and an anova. For most of you my problem is very simple I am sure.
I need an help with an example, looking at one table I am analyzing. The table
is in attachme
:r-help-boun...@r-
> project.org] On Behalf Of Frodo Jedi
> Sent: Wednesday, January 05, 2011 4:10 PM
> To: r-help@r-project.org
> Subject: [R] Problem with 2-ways ANOVA interactions
>
> Dear All,
> I have a problem in understanding how the interactions of 2 ways ANOVA
> work,
un...@r-project.org [mailto:r-help-boun...@r-
> project.org] On Behalf Of Frodo Jedi
> Sent: Wednesday, January 05, 2011 3:22 PM
> To: Robert Baer; r-help@r-project.org
> Subject: Re: [R] Assumptions for ANOVA: the right way to check the
> normality
>
> Dear Robert,
[[elided Yahoo spam]]
&g
), another is to use proportional odds logistic
regression.
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
> project.org] On Beh
Dear all,
I need to understand a thing in the beheaviour of the two functions aov and
anova in the following case
involving an analysis of ANOVA with repeated measures:
If I use the folowing command I don´t get any problem:
>aov1 = aov(response ~ stimulus*condition +
>Error(subject/(stimulus*co
example of its use, but you will need to dig out the
appropriate column yourself.
From: r-help-boun...@r-project.org [r-help-boun...@r-project.org] On Behalf Of
Frodo Jedi [frodo.j...@yahoo.com]
Sent: 08 January 2011 01:51
To: r-help@r-project.org
Subject
areas is useful if you don't have
> enough experience to decide what you are comfortable with.
> >
> > For your description, I would try the proportional odds logistic
> regression, but again, you should probably consult with someone who has
> experience rather than trying th
Dear Dieter,
thanks a lot for your answer.
Don´t you mind to do an example of the use of the command?
For example, in attachment you find a .csv table resulting from an experiment,
you can access it by means of this command:
> scrd<-
>read.csv(file='/Users/../tables_for_R/table_quality_wo
Dear all,
I need an help because I am really not able to find over internet a good example
in R to analyze an unbalanced table with Anova with repeated measures.
For unbalanced table I mean that the questions are not answered all by the same
number of subjects.
For a balanced case I would use the
Hi Ben,
many many thanks!!
From: Ben Bolker
To: r-h...@stat.math.ethz.ch
Sent: Sat, January 8, 2011 9:39:20 PM
Subject: Re: [R] Anova with repeated measures for unbalanced design
Frodo Jedi yahoo.com> writes:
>
> Dear all,
> I need an help
Dear all,
how can I perform a post hoc analysis for ANOVA with repeated measures (in
presence of a balanced design)?
I am not able to find a good example over internet in R...is there among you
someone so kind to give
me an hint with a R example please?
For example, the aov result of my analysis
ath.ethz.ch
Sent: Sat, January 8, 2011 9:39:20 PM
Subject: Re: [R] Anova with repeated measures for unbalanced design
Frodo Jedi yahoo.com> writes:
>
> Dear all,
> I need an help because I am really not able to find over
> internet a good example
> in R to analyze an unbal
normally distributed, but this still
> assumes that the data is at least interval data, i.e. that we firmly
> believe that the difference between a response of 1 and a response of 2
> is exactly the same as a difference between a 6 and a 7 and that the
> difference from 4 to 6 is exactl
Many many thanks for your feedback Greg.
You have been very enlightening for me.
Now is time for me to study the material you kindly provided me. Thanks.
From: Greg Snow
Cc: "r-help@r-project.org"
Sent: Tue, January 11, 2011 10:13:34 PM
Subject: RE: [R] A
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