Displaying 20 results from an estimated 100 matches similar to: "Coin Toss Simulation"
2010 Oct 15
0
nomianl response model
Is there a way to estimate a nominal response model?
To be more specific let's say I want to calibrate:
\pi_{v}(\theta_j)=\frac{e^{\xi_{v}+\lambda_{v}\theta_j}}{\sum_{h=1}^m
e^{\xi_{h}+\lambda_{h}\theta_j}}
Where $\theta_j$ is a the dependent variable and I need to estimate
$\xi_{h}$ and $\lambda_{h}$ for $h \in {1...,m}$.
Thank you,
Mauricio Romero
Quantil S.A.S.
Cel: 3112231150
2012 Oct 09
2
simulating a toss of a coin
All,
I've devised a way to toss a coin three times and record the number of heads, then use the table command to summarize the number of time 0, 1, 2, or 3 heads were obtained.
n <- 100
x <- sample(c("H","T"),3*n,replace=TRUE)
dim(x) <- c(3,n)
num_heads <- apply(x,2,function(x) sum(x=="H"))
table(num_heads)/n
What I'd like to do next is run this
2009 Aug 31
4
Offtopic, HT vs. HH in coin flips
Dear R-help,
Could someone please try to explain this paradox to me? What is more likely to show up first in a string of coin tosses, "Heads then Tails", or "Heads then Heads"?
##generate 2500 strings of random coin flips
ht <- replicate(2500,
paste(sample(c("H", "T"), 100, replace = TRUE),
collapse =
2009 Jun 26
0
ready to toss the towel | lapack and 2.9.0
Well, I've now tried just about every permutation I can think of -
including using the ATLAS lapack (instead of generic), in various
combinations with ACML, or generic BLAS, or ATLAS blas. No matter what I
do, so long as I have lapack of any flavour, I get the 'stats error'
with make check. And, it always seems to throw the error at the same
point in the stats test file (an svd in
2007 Jun 23
2
connecting to process?
Hello,
sorry if this is a duplicate message -- the R mail-server told me that my
original post was being held for moderator approval. Whatever. I just want
to know if it is possible to connect R to a running process and have
realtime data updates to some plots? Thanks,
Charles
[[alternative HTML version deleted]]
2007 Jun 22
1
connecting to running process possible?
Hello,
i'm trying to find a more modern system to reproduce the functionality that
was available through the Histoscope program (from Fermilab). Namely, the
capability of connecting to a running process and having plots update in
realtime in response to new data. Is this possible with R? Thank you,
Charles Cosse
[[alternative HTML version deleted]]
2010 Feb 08
1
Wilcoxon signed-ranks test using package coin ?
Given the following data, and hypothesized median M.0 I've found a
method to implement the Wilcoxon signed-rank test.
Data: (with one zero difference and tied ranks)
x <- c(136, 103, 91, 122, 96, 145, 140, 138, 126, 120, 99, 125,
91,142, 119, 137)
M.0 <- 119
> library(exactRankTests)
Package ?exactRankTests? is no longer under development.
Please consider using package ?coin?
2011 Oct 31
2
one sample Wilcoxon test using 'coin'
Hi,
R allows me to run a one sample Wilcoxon test like this:
wilcox.test(c(1,3.5,2.1,4,1.5,5), mu=2, exact=TRUE)
The function 'wilcoxsign_test' from the package 'coin' should (I
suppose) be able to calculate exact p values even if there are ties in
the ranks. However, I couldn't find information on how to run a one
sample test using 'wilcoxsign_test' like in the
2010 Apr 26
0
Permutation tests using apply function with package coin
I am using "apply" to run exact permutation t-tests by columns
using the coin package. For example:
library(coin)
dat <- matrix(rnorm(7*35),7,35)
fun <- function(x) {
pvalue( independence_test(x~f,
data=data.frame(x, f=factor(c(rep("a",4),rep("b",3)))),
distribution = "exact"))
}
p.vals <- apply(dat, 2, fun)
Some small-scale
2008 Mar 12
0
Problem with approximate null distribution (package: coin)
Hi,
I am trying to make use of "approximate" option to obtain null distribution
through Monte-Carlo resampling, as described in coin library documentation.
Unfortunately, this does not play well with my data -- permutation process
swallows astonishingly large amounts of RAM (4-5Gb) and runs far too long (30
min for B=10). Apparently, this is caused by the size of my dataset (see
2013 Sep 23
1
Permutation Test on Interactions {coin}
Dear List,
I'm interested in performing a permutation test on the interaction between
a binary treatment indicator and a covariate (either continuous or
categorical). I'm interested in the p-value of the interaction effect from
a permutation test, and I'm using the coin package for that purpose.
As I haven't seen any examples like this in the package documentation (or
anywhere
2009 Jan 18
0
Singly ordered contingency tables with lbl_test (coin)
Hi all,
is it possible to perform a linear-by-linear association test (lbl_test, package coin) for a SINGLY ordered table ? And, if yes, how to manage the "scores" ?
Thanks in advance
Gilles - France
[[alternative HTML version deleted]]
2017 Sep 08
0
one sample permutation test using package 'coin'
Using the package ?exactRankTests? one can execute a one-sample permutation test for a hypothesized location parameter of 0 like:
perm.test(rnorm(30,0))
The package ?exactRankTests? seems now to be deprecated in favor of the ?coin? package which as I understand is a superset of ?exactRankTests? in terms of functionality.
The ?coin? package allows one to run a two-sample permutation test using
2003 Apr 03
0
New Coin Operated Mobile Phone Charger - Seeking Overseas Distributors
ProductPublic Mobile Phone Multi-charger
(With/Without Coin Module)
Functions1. Accept coins.
2. Allows conversation while charging.
2. 10 travel charger plugs for most models.
3. Light box advertising.
4. UV phone sanitizing
InputAC 110 - 250V 50~60Hz
Output< 12 V 1C 5 A x 10
Measurement29 cm x 20 cm x 51.6 cm
Net Weight5 kg
Contacthttp://www.YukiCharger.com
sales@YukiCharger.com
2005 Jun 03
0
New CRAN package `coin'
Conditional Inference Procedures in a Permutation Test Framework
The `coin' package implements a general framework for conditional
inference procedures, commonly known as permutation tests,
theoretically derived by Strasser & Weber (1999). The conditional
expectation and covariance for a broad class of multivariate linear
statistics as well as the corresponding multivariate limiting
2005 Jun 03
0
New CRAN package `coin'
Conditional Inference Procedures in a Permutation Test Framework
The `coin' package implements a general framework for conditional
inference procedures, commonly known as permutation tests,
theoretically derived by Strasser & Weber (1999). The conditional
expectation and covariance for a broad class of multivariate linear
statistics as well as the corresponding multivariate limiting
2006 Sep 29
1
Wilcoxon Rank test of Package Coin
Hi,
I am running the following example which can be found on page 12 of the pdf file of COIN package
wt<-wilcox_test(pd~age,data=water_transfer,distribution="exact", conf.int=TRUE)
"wt" actually contains the estimate of difference in location and the confidence interval of it. I am just wondering how can I extract these values? From the examples, I understand that the
2008 Jul 20
0
coin package (conditional inference / permutation): parameter teststat
Dear R-list members,
This is in fact a question about statistics, not directly
about the R software.
The coin package, for conditional inference through permutation
methods, has as it main function the function independence_test.
One of its parameters is teststat, about which the package
documentation says:
teststat: "a character, the type of test statistic to be applied:
either a
2009 May 07
1
error using lapply with oneway_test (coin package)
Dear expeRts,
I would like to use a oneway_test (from package coin) to test whether
two groups differ on various variables. The variables are encoded
within a data frame. Unfortunately, I obtained an error, that I don't
understand. Could you please help me ?
Example:
library(coin)
y <- as.data.frame(matrix(rnorm(200), ncol=2))
group <- as.factor(unif(100))
lapply(y,
2010 Dec 08
1
Trouble Loading doBy and coin Packages
Good Evening R-Help Community:
I have attached a file that contains the output from sessionInfo() and a summary
of my Win XP system. I am?running R 2.12.0 and using Tinn-R 2.3.6.2 as my
interface. When I attempt to call either the doBy or coin packages R generates
an error that I do not understand and have so far not been able to resolve by
searching R resources.
I exchanged a couple of