Displaying 12 results from an estimated 12 matches similar to: "Manually calculating values from aov() result"
2024 Aug 07
3
Manually calculating values from aov() result
Hi,
Thanks for this information. Is there any way to force R to use Type-1
SS? I think most textbooks use this only.
Thanks and regards,
On Wed, 7 Aug 2024 at 17:00, Duncan Murdoch <murdoch.duncan at gmail.com> wrote:
>
> On 2024-08-07 6:06 a.m., Brian Smith wrote:
> > Hi,
> >
> > I have performed ANOVA as below
> >
> > dat = data.frame(
> >
2024 Aug 07
1
Manually calculating values from aov() result
On 2024-08-07 6:06 a.m., Brian Smith wrote:
> Hi,
>
> I have performed ANOVA as below
>
> dat = data.frame(
> 'A' = c(-0.3960025, -0.3492880, -1.5893792, -1.4579074, -4.9214873,
> -0.8575018, -2.5551363, -0.9366557, -1.4307489, -0.3943704),
> 'B' = c(2,1,2,2,1,2,2,2,2,2),
> 'C' = c(0,1,1,1,1,1,1,0,1,1))
>
> summary(aov(A ~ B * C, dat))
2024 Aug 07
1
Manually calculating values from aov() result
Dear Brian,
As Duncan mentioned, the terms type-I, II, and III sums of squares
originated in SAS. The type-II and III SSs computed by the Anova()
function in the car package take a different computational approach than
in SAS, but in almost all cases produce the same results. (I slightly
regret using the "type-*" terminology for car::Anova() because of the
lack of exact
2007 Aug 30
1
(no subject)
Dear R users,I am looking for an easy (i.e., direct) way in obtaining the F and p values from the intercept in anovas with within-subject designs. Data are from a psychophysics expeirment where I am using d' (d-prime) values obtained from 3 modalities of presentation in each subject.I would like to know not only whether there is an effect of modality, but also wether the main effect is
2007 Aug 30
1
How to obtain intercept statistics in anova with within-subject factors?
Dear R users,
I am looking for an easy (i.e., direct) way of obtaining the F and p values
from the intercept in anovas with within-subject designs.
My data are from a psychophysics experiment where I am using d' (d-prime)
values obtained from 3 modalities of presentation in each subject. I would
like to know not only whether there is an effect of modality, but also
whether the main effect is
2010 Aug 23
1
Speeding up sum and prod
Looking for more ways to speed up R, I've found that large
improvements are possible in the speed of "sum" and "prod" for long
real vectors.
Here is a little test with R version 2.11.1 on an Intel Linux system
> a <- seq(0,1,length=1000)
> system.time({for (i in 1:1000000) b <- sum(a)})
user system elapsed
4.800 0.010 4.817
> system.time({for (i
2012 Jun 07
0
how lm behaves
I was wondering if somebody could explain why I get different results here:
>treats[,2]<-as.factor(treats[,2])
>treats[,5]<-as.factor(treats[,5])
>treats[,4]<-as.factor(treats[,4])
#there are 'c' on more days than I have 'h2o2', where treats[,4] is the day. I only want 'c' that correspond to the same days that I have a 'h2o2' also.
2013 Jan 10
0
same model, different coefficients
Hello R-help subscribers,
I am analyzing a data set using a mixed logit model, and I have recently
discovered some curious behavior. I am hoping you all can help.
I first ran the following model in December 2012.
lmer(Response.binary ~ ItemType.c * Block + (1 | Subject) + (1 | Word),
data=lexdec, family="binomial")
I then took a break from the data for the holidays. I returned to
2019 May 13
0
[PATCH v2 0/8] vsock/virtio: optimizations to increase the throughput
On 2019/5/10 ??8:58, Stefano Garzarella wrote:
> While I was testing this new series (v2) I discovered an huge use of memory
> and a memory leak in the virtio-vsock driver in the guest when I sent
> 1-byte packets to the guest.
>
> These issues are present since the introduction of the virtio-vsock
> driver. I added the patches 1 and 2 to fix them in this series in order
> to
2019 May 10
18
[PATCH v2 0/8] vsock/virtio: optimizations to increase the throughput
While I was testing this new series (v2) I discovered an huge use of memory
and a memory leak in the virtio-vsock driver in the guest when I sent
1-byte packets to the guest.
These issues are present since the introduction of the virtio-vsock
driver. I added the patches 1 and 2 to fix them in this series in order
to better track the performance trends.
v1:
2019 May 10
18
[PATCH v2 0/8] vsock/virtio: optimizations to increase the throughput
While I was testing this new series (v2) I discovered an huge use of memory
and a memory leak in the virtio-vsock driver in the guest when I sent
1-byte packets to the guest.
These issues are present since the introduction of the virtio-vsock
driver. I added the patches 1 and 2 to fix them in this series in order
to better track the performance trends.
v1:
2008 Apr 11
4
Format regression result summary
Hello to the whole group.
I am a newbie to R, but I got my way through and think it is a lot easier to
handle than other software packages (far less clicks necessary).
However, I have a problem with respect to the summary of regression results.
The summary function gives sth like:
Residuals:
Min 1Q Median 3Q Max
-0.46743 -0.09772 0.01810 0.11175 0.42252