Displaying 20 results from an estimated 99 matches for "diventare".
2004 Oct 22
3
Convert a list in a dataframe
...anno
-427017.1740 217.0588
[[2]]
(Intercept) anno
-39625.82146 21.78025
.....
[[12]]
(Intercept) anno
257605.0343 -129.7646
I want create a data frame with two columns (intercept
and anno)using data in these list.
Any help will be appreciated.
Best
Vito
=====
Diventare costruttori di soluzioni
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese.shtml
2004 Jul 21
2
Testing autocorrelation & heteroskedasticity of residuals in ts
...elation and heteroskedasticity.
Is there a way to perform Durbin-Watson test and
Breusch-Pagan test (or other simalar tests) for time
series?
I find dwtest() and bptest() in the package lmtest,
but it requieres an lm object, while I've a ts object.
Any help will be appreciated.
Best
Vito
=====
Diventare costruttori di soluzioni
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese.shtml
2004 Oct 27
2
Skewness and Kurtosis
...on(x)
{
q<-as.vector(quantile(x,prob=c(.25,.50,.75)))
b=(q[3]+q[1]-2*q[2])/(q[3]-q[2])
return(b)
}
b3<-function(x)
{
m=mean(x)
me=median(x)
n=length(x)
d=sum(abs(x-me))/n
b=(m-me)/d
return(b)
}
but I'm looking for some already included in a
package.
Thanks in advance.
Best
Vito
=====
Diventare costruttori di soluzioni
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese.shtml
2005 Jan 28
3
GLM fitting
...ati)
Coefficients:
(Intercept) x
-348.23 11.23
Degrees of Freedom: 12 Total (i.e. Null); 11 Residual
Null Deviance: 17.94
Residual Deviance: 7.011e-10 AIC: 4
I don't understand the meaning of warning. Can anyone
help me? Many thanks.
Cheers,
Vito
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Top 10 reasons to become a Statistician
1. Deviation is considered normal
2. We feel complete and sufficient...
2004 Oct 20
2
R & Graphs
Dear R-users,
I'm finding for a R-package concerning graphs. Is
there some kind of that package? I've a set of
correlation coeffients between several variable and I
wish to built a graph to link variables correlated.
Many thanks.
Best,
Vito
=====
Diventare costruttori di soluzioni
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese.shtml
2004 Nov 15
1
R: how can draw probability density plot?
...probability
density plot. Now I always generate random numbers of
normal distribution and calculate their dnorm(mu,
var), finally plot them. I am eager to know some
directly operation.
Thank you for your attention.
I am looking forward to hearing from you soon.
Best regards,
Long Yu
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese....
2004 Nov 22
1
R: simulation of Gumbel copulas
...rest you'll see:
http://faculty.washington.edu/ezivot/book/QuanCopula.pdf
Cordially
Vito
You wrote:
Dear R:
Is there a function or a reference to simulate Gumbel
copulas, please?
Thanks in advance!
Sincerely,
Erin Hodgess
mailto: hodgess at gator.uhd.edu
R version 2.0.1 windows
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/palese/
2004 Aug 09
2
Using R "boxplot" function in Excel
Hi, I have downloaded the "R-Com and I was able to run "Interactive Graphics
Demo 2" in excel. However, I couldn't create my own boxplot. Whenever I
tried to run any code, it always say" Error in loading DLL", even
"=rput(A1,A2:A20)". Any idea about what's going wrong? A detailed
explaination about how to use R-Excel tool would be greatly appreciated.
2005 Jul 08
1
Orthogonal regression
Dear R-Users,
is there any statement to fit a orthogonal regression
in R environment?
Many thanks in advance.
Best regards,
Vito
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
"Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write"
H....
2004 Nov 10
1
Loading some function at R startup
...?
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status
major 2
minor 0.0
year 2004
month 10
day 04
language R
Thanks in advance.
Vito
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese....
2004 Jul 07
1
Daily time series
...60
x<-c(10,20,30,40,50,60) ## observation
serie<-ts(dati, start=c(1,1),frequency=7) ##creating
ts object
serie ## printing ts output
Time Series:
Start = c(1, 1)
End = c(1, 6)
Frequency = 7
[1] 10 20 30 40 50 60
Could someone help me?
Thanks in advance.
Sincerely.
Vito Ricci
=====
Diventare costruttori di soluzioni
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese.shtml
2004 Jul 07
7
Importing an Excel file
Hello, R users,
I am a very beginner of R and tried read.csv to import an excel file after
saving an excel file as csv. But it added alternating rows of fictitious NA
values after row number 16. When I applied read.delim, there were trailing
several commas at the end of each row after row number 16 instead of NA
values. Appreciate your help.
Kyong
[[alternative HTML version deleted]]
2005 Jan 13
1
Re:Time-Series
...he
name of the column to the dataframe name by means of
the $ sign:
so z$energy is the column named energy in the
dataframe z.
I don't know how to do the same with a multi-variable
time-series. I tried
both z.energy, z$energy to no avail.
What's the right synthax?
Ciao
Vittorio
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Top 10 reasons to become a Statistician
1. Deviation is considered normal
2. We feel complete and sufficient...
2005 Jan 25
1
Fitting distribution with R: a contribute
...oodness of fit.
TOC
1.0 Introduction
2.0 Graphics
3.0 Model/function choice
4.0 Parameters estimate
5.0 Measure of goodness of fit
6.0 Goodness of fit tests
6.1 Normality tests
7.0 Conclusions
Appendix
References
Any comments and suggestion will be appreciated.
Best regards
Vito
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Top 10 reasons to become a Statistician
1. Deviation is considered normal
2. We feel complete and sufficient...
2004 Nov 12
4
Mode in case of discrete or categorial data
...t; "D" "C" "B" "C" "D" "A" "C" "A" "A"
"A" "C" "A" "D" "A" "B" "B"
[39] "A" "B"
> Mode(ss)
[1] "A"
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese....
2005 Jan 13
2
chisq.test() as a goodness of fit test
...I wrong?
X2=sum((O-E)^2)/E)
O=empirical frequencies
E=expected freq. calculated with the model (such as
normal distribution)
See:
http://www.itl.nist.gov/div898/handbook/eda/section3/eda35f.htm
for X2 used as a goodness of fit test.
Any help will be appreciated.
Thank a lot. Bye.
Vito
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Top 10 reasons to become a Statistician
1. Deviation is considered normal
2. We feel complete and sufficient...
2004 Aug 12
4
Help with generating data from a 'not quite' Normal distriburtion
I would be very grateful for any help from members of this list for what
might be a simple problem...
We are trying to simulate the behaviour of a clinical measurement in a
series of computer experiments. This is simple enough to do in R if we
assume the measurements to be Gaussian, but their empirical distribution
has a much higher peak at the mean and the distribution has much longer
tails.
2004 Nov 17
1
R: log-normal distribution and shapiro test
...lthough, it is really no
homework. I need it
for my Phd in physics; after a lengthy computation on
the computer I
would like to go to see whether the outputs are
log-normal or normal
distributed.
Regards,
Siegfried Gonzi
==
University of Graz
Institute for Physics
Tel.: ++43-316-380-8620
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/cat_palese....
2004 Dec 02
1
Re: A somewhat off the line question to a log normal distribution
...which are log-normal
distributed when evaluated
on a daily basis over the course of a year but they
are close to a
Gaussian distribution when considered under the light
of monthly means
over the course of a year.
Is such a latter case feasible. And if not why.
Regards,
Siegfried Gonzi
=====
Diventare costruttori di soluzioni
Became solutions' constructors
"The business of the statistician is to catalyze
the scientific learning process."
George E. P. Box
Visitate il portale http://www.modugno.it/
e in particolare la sezione su Palese http://www.modugno.it/archivio/palese/
2004 Nov 24
3
T-test syntax question
Hi.
I'd like to do a t-test to compare the Delta values of items with Crit=1
with Delta values of items with Crit=0. What is the t.test syntax?
It should produce a result like this below (I can't get in touch with the
person who originally did this for me)
Welch Two Sample t-test
data: t1$Delta by Crit
t = -3.4105, df = 8.674, p-value = 0.008173 alternative hypothesis: true