Displaying 20 results from an estimated 700 matches similar to: "Normal tests disagree?"
2010 Nov 17
2
Jarque-Bera test
Hello,
I'm so confused why I can't run Jarque-Bera test on my data. I have 9968
observation and I want to run Jarque-Bera test on them, but no matter how
hard I am trying I can't get it work. please let me know what should I do.
Best,
Kiana
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2007 Apr 27
2
Jarque-Bera and rnorm()
Folks,
I'm a bit puzzled by the fact that if I generate 100,000 standard normal
variates using rnorm() and perform the Jarque-Bera on the resulting vector,
I get p-values that vary drastically from run to run. Is this expected?
Surely the p-val should be close to 1 for each test?
Are 100,000 variates sufficient for this test?
Or is it that rnorm() is not a robust random number generator?
2004 Jan 14
3
How can I test if time series residuals' are uncorrelated ?
Ok I made Jarque-Bera test to the residuals (merv.reg$residual)
library(tseries)
jarque.bera.test(merv.reg$residual)
X-squared = 1772.369, df = 2, p-value = < 2.2e-16
And I reject the null hypotesis (H0: merv.reg$residual are normally
distributed)
So I know that:
1 - merv.reg$residual aren't independently distributed (Box-Ljung test)
2 - merv.reg$residual aren't indentically
2011 Oct 30
2
jarquebera_test_results
Hi!
I got a loop where i print out the results of Jarque Bera tests, but I
have to put, the p-values in a vector. Can you help me how to do it in
an effective way and not just typing in the results to a vector? Thanks
a lot, here is the code:
for(i in 1:60){
print(jarque.bera.test(loghozamok[((20*(i-1))+1):(20*(i+11))]))}
2008 Jul 26
1
Simple vector question.
I have some data that I read in via read.csv:
sales2007 <- read.csv("Total2007.dat", header=TRUE)
The data looks like:
> sales2007[1:605,]
Year DayOfYear Sku Quantity CatId Category SubCategory
1 2007 1 100091 1 10862 HOLIDAY Christmas
2 2007 1 100138 1 11160 PET COSTUMES Famous (Licensed)
3 2007
2008 Sep 04
1
help on jarque test
Hi all,
I used the function jarque.test (in the moments package) on my data set and
I obtained something like this:
Jarque-Bera Normality Test
data: x
JB = 4.8381, p-value = 0.089
alternative hypothesis: greater
or
Jarque-Bera Normality Test
data: x
JB = 2.6018, p-value = 0.2723
alternative hypothesis: greater
I cannot understand this. Please, someone can help me?
thank you
2007 Feb 22
1
Diagnostic Tests: Jarque-Bera Test / RAMSEY
Hello R-Users,
The following questions are not R-technical, but more of general statistical
nature.
1. NORMALITY
I built a normal linear regression model and now I want to check for the
residual normality assumption. If I check the distribution graphically and
look at the descriptive characteristics (skewness and kurtosis are below 1),
I would confirm that the residuals are normally
2008 Aug 05
1
RESHAPE cast help.
I have a set of data that is basically sales figures for a given year. It has columns for Yeaqr, Day Of Year, Sku, SubCatetory, and Category. The first few lines of data look like:
Year DayOfYear Sku Quantity CatId Category SubCategory
1 2007 1 100091 1 10862 HOLIDAY Christmas
2 2007 1 100138 1 11160 PET COSTUMES Famous
2001 Feb 18
1
confused about names()
Hi all .. there is no doubt a simple answer to this, but it eludes me.
In the first session below ( with jarque.bera.test) you will see that
p.value prints with a name of X-squared .
This is easily fixed by changing the source to assign a
more appropriate name - no name is assigned in the source listing
below (the original source code of jarque.bera.test() from tseries).. but
what I
2003 Oct 21
1
Jarque-Bera Test
Dear all,
i have the question about the using of Jarque-Bera Test by using R. The question is that I do not have in my package "ts" this test and can not obtain any information in the help-file. Could you help my? Where could I download the package and which one, to use the Jarque-Bera Test?
Thank You,
Susan
---------------------------------
- New people, new
2004 Jan 13
3
How can I test if a not independently and not identically distributed time series residuals' are uncorrelated ?
I'm analizing the Argentina stock market (merv)
I download the data from yahoo
library(tseries)
Argentina <- get.hist.quote(instrument="^MERV","1996-10-08","2003-11-03", quote="Close")
merv <- na.remove(log(Argentina))
I made the Augmented Dickey-Fuller test to analyse
if merv have unit root:
adf.test(merv,k=13)
Dickey-Fuller = -1.4645,
1999 Oct 25
1
GARCH models available
tseries_0.3-0 at CRAN now contains the following new features:
NelPlo Nelson-Plosser Macroeconomic Time Series
garch Fit GARCH Models to Time Series
get.hist.quote Download Historical Finance Data
jarque.bera.test Jarque-Bera Test
na.remove NA Handling Routines for Time Series
garch contains a GARCH estimation routine together
1999 Oct 25
1
GARCH models available
tseries_0.3-0 at CRAN now contains the following new features:
NelPlo Nelson-Plosser Macroeconomic Time Series
garch Fit GARCH Models to Time Series
get.hist.quote Download Historical Finance Data
jarque.bera.test Jarque-Bera Test
na.remove NA Handling Routines for Time Series
garch contains a GARCH estimation routine together
2007 May 25
3
normality tests
Hi all,
apologies for seeking advice on a general stats question. I ve run
normality tests using 8 different methods:
- Lilliefors
- Shapiro-Wilk
- Robust Jarque Bera
- Jarque Bera
- Anderson-Darling
- Pearson chi-square
- Cramer-von Mises
- Shapiro-Francia
All show that the null hypothesis that the data come from a normal
distro cannot be rejected. Great. However, I don't think it looks
2005 Feb 17
1
Is there a way to specify different significance levels in jarque.bera.test()?
Dear List:
I am trying to understand how to use the
jarque.bera.test() function of the "tseries" package.
A numeric vector or time series seems to be the only
argument required. What is the default significance
level for rejecting the null of normality?
Is there a way to specify different significance
levels?
platform i386-pc-mingw32
arch i386
os mingw32
2009 Mar 31
1
Jarque-Bera test and Ljung-Box test for multivariate time series
Hi!
I know that there is function in fBasics package for univariate Jarque-Bera
test and a funtion for univariate Ljung-Box test in stats package. But I am
wondering if there is a function somewhere to do the tests for multivariate
time series?
Thanks,
John
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2006 Jun 20
1
GARCH
Dear all R-users,
I have a GARCH related query. Suppose I fit a GARCH(1,1) model on a
dataframe dat
>garch1 = garch(dat)
>summary(garch1)
Call:
garch(x = dat)
Model:
GARCH(1,1)
Residuals:
Min 1Q Median 3Q Max
-4.7278 -0.3240 0.0000 0.3107 12.3981
Coefficient(s):
Estimate Std. Error t value Pr(>|t|)
a0 1.212e-04 2.053e-06 59.05 <2e-16 ***
a1
2006 Jun 20
1
GARCH
Dear all R-users,
I have a GARCH related query. Suppose I fit a GARCH(1,1) model on a
dataframe dat
>garch1 = garch(dat)
>summary(garch1)
Call:
garch(x = dat)
Model:
GARCH(1,1)
Residuals:
Min 1Q Median 3Q Max
-4.7278 -0.3240 0.0000 0.3107 12.3981
Coefficient(s):
Estimate Std. Error t value Pr(>|t|)
a0 1.212e-04 2.053e-06 59.05 <2e-16 ***
a1
2007 May 25
1
normality tests [Broadcast]
The normality of the residuals is important in the inference procedures for the classical linear regression model, and normality is very important in correlation analysis (second moment)...
Washington S. Silva
> Thank you all for your replies.... they have been more useful... well
> in my case I have chosen to do some parametric tests (more precisely
> correlation and linear regressions
2005 Jan 17
3
Skewness test
Hi,
is there a test for the H0 skewness=0 (or with skewness as test
statistic and normality as H0) implemented in R?
Thank you,
Christian
***********************************************************************
Christian Hennig
Fachbereich Mathematik-SPST/ZMS, Universitaet Hamburg
hennig at math.uni-hamburg.de, http://www.math.uni-hamburg.de/home/hennig/