and do read the R-manual about how to make a vector
matthew wrote:
>
> Hi, how can I solve a problem without the function t.test???
>
> for example:
> x<-(1,3,5,7)
> y<-(2,4,6)
> t.test(x,y,alternative="less",paired=FALSE,var.equal=TRUE,conf.level=0.95)
>
>
>
--
View this message
matthew wrote:
> Hi, how can I solve a problem without the function t.test???
>
> for example:
> x<-(1,3,5,7)
> y<-(2,4,6)
> t.test(x,y,alternative="less",paired=FALSE,var.equal=TRUE,conf.level=0.95)
>
>
>
Homework?
Hints: Take out your statistics textbook and look up the formulas for
the t
Hi, how can I solve a problem without the function t.test???
for example:
x<-(1,3,5,7)
y<-(2,4,6)
t.test(x,y,alternative="less",paired=FALSE,var.equal=TRUE,conf.level=0.95)
--
View this message in context:
http://www.nabble.com/t.test-tf4034225.html#a11460445
Sent from the R help mailing list
On 23 Nov 2006, at 13:46, Peter Dalgaard wrote:
> Robin Hankin <[EMAIL PROTECTED]> writes:
>
>> Hi
>>
>> I have a vector x of length n. I am interested in x[1]
>> being different from the other observations (ie x[-1]).
>>
[snip]
>>
>> What arguments do I need to send to t.test() to test my nul
. ~William W. Watt
> >
> > A statistical analysis, properly conducted, is a delicate dissection of
> > uncertainties, a surgery of suppositions. ~M.J.Moroney
> >
> > -Oorspronkelijk bericht-
> > Van: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]
lgium
> >
> > tel. + 32 54/436 185
> >
> > [EMAIL PROTECTED]
> >
> > www.inbo.be
> >
> >
> >
> > Do not put your faith in what statistics say until you have carefully
> > considered what they do not say. ~William W. Watt
> >
> >
On Thu, 23 Nov 2006, Peter Dalgaard wrote:
> Robin Hankin <[EMAIL PROTECTED]> writes:
>
>> Hi
>>
>> I have a vector x of length n. I am interested in x[1]
>> being different from the other observations (ie x[-1]).
>>
>> My null hypothesis is that x[1]
>> is drawn from a Gaussian distribution of
AIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Namens Robin Hankin
> Verzonden: donderdag 23 november 2006 14:12
> Aan: [EMAIL PROTECTED]
> Onderwerp: [R] t.test()
>
> Hi
>
> I have a vector x of length n. I am interested in x[1]
> being different from the other observations
Robin Hankin <[EMAIL PROTECTED]> writes:
> Hi
>
> I have a vector x of length n. I am interested in x[1]
> being different from the other observations (ie x[-1]).
>
> My null hypothesis is that x[1]
> is drawn from a Gaussian distribution of the same
> mean as observations x[-1], which are as
stical analysis, properly conducted, is a delicate dissection of
> uncertainties, a surgery of suppositions. ~M.J.Moroney
>
> -----Oorspronkelijk bericht-
> Van: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Namens Robin Hankin
> Verzonden: donderdag 23 november 2006 14:12
>
ot say. ~William W. Watt
>
> A statistical analysis, properly conducted, is a delicate
> dissection of
> uncertainties, a surgery of suppositions. ~M.J.Moroney
>
> -Oorspronkelijk bericht-
> Van: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Namens Robin Hankin
&
tainties, a surgery of suppositions. ~M.J.Moroney
-Oorspronkelijk bericht-
Van: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Namens Robin Hankin
Verzonden: donderdag 23 november 2006 14:12
Aan: [EMAIL PROTECTED]
Onderwerp: [R] t.test()
Hi
I have a vector x of length n. I am intereste
Hi
I have a vector x of length n. I am interested in x[1]
being different from the other observations (ie x[-1]).
My null hypothesis is that x[1]
is drawn from a Gaussian distribution of the same
mean as observations x[-1], which are assumed
to be iid Gaussian. The (unknown) variance
of x[1]
Roth, Richard wrote:
> Hi, I have a data matrix of gene expression data from two groups that
> I would like to compare using the t-test. The data has been
> processed using RMA and transformed using log2. I would like to
> compare the two groups for each gene (N=10,000 genes) and have a
> result
Hi, I have a data matrix of gene expression data from two groups that I would
like to compare using the t-test. The data has been processed using RMA and
transformed using log2. I would like to compare the two groups for each gene
(N=10,000 genes) and have a result that lists the p-value for e
uot;
[12] ""
and transfer 'output' to Perl.
Cheers
Henrik
Wagle, Mugdha wrote:
> Hi,
>
> I've just started using R and RSPerl. I have some code as follows:
>
> &R::initR("--no-save");
> &R::call("t.test", ([EMAIL PROTECTED], [
xecution the output is as follows:
Calling R function name `t.test', # arguments: 3
1) Arg type 3
Got a reference to a value 10
Here now!2) Arg type 3
Got a reference to a value 10
Here now!Calling R
t.test(c(0, 6.24280675278087, 6.35175793656943, 5.76925805661511,
7.0789316246711, 7.46364986611
How about:
as.numeric(t.test(rnorm(12))[[1]])
- Original Message -
From: "Chuck Cleland" <[EMAIL PROTECTED]>
To: "christopher ciotti" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Friday, April 16, 2004 6:25 PM
Subject: Re: [R] t.test & forma
Sorry, I should have checked that more closely. I see that
t.test(rnorm(12))[[1]]
retains the "t".
christopher ciotti wrote:
...
I'm trying to format some data where I only need one of the values
returned from a test, say a t-test in this instance. I have the following:
> R.version.stri
How about this?
t.test(x)[[1]]
The result of t.test(x) is a list and "statistic" is the first
component of that list.
christopher ciotti wrote:
...
I'm trying to format some data where I only need one of the values
returned from a test, say a t-test in this instance. I have the following:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Tony Plate wrote:
> as.numeric() (and its siblings) strip the names from vectors, e.g.:
>
> > as.numeric(t.test(rnorm(1001))$statistic)
> [1] -0.6320304
> >
>
> hth,
>
> Tony Plate
Thanks for the quick response.
- --
chris ciotti ([EMAIL PROTECTED])
P
as.numeric() (and its siblings) strip the names from vectors, e.g.:
> as.numeric(t.test(rnorm(1001))$statistic)
[1] -0.6320304
>
hth,
Tony Plate
At Friday 05:14 PM 4/16/2004, christopher ciotti wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hello all -
I'm trying to format some data where
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hello all -
I'm trying to format some data where I only need one of the values
returned from a test, say a t-test in this instance. I have the following:
> R.version.string
[1] "R version 1.9.0, 2004-04-12"
> x <- rnorm(1001)
> t.test(x)$statistic
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