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22 results for “from:Holger Steinmetz”

Hausman Test
Holger Steinmetz · Jan 16, 2011 · r-help

Thank you both very much ! This helped me a lot. Best, Holger -- View this message in context: http://r.789695.n4.nabble.com/Hausman-Test-tp3220016p3220123.html Sent from the R help mailing list archive at Nabble.com.

Hausman test for endogeneity
Holger Steinmetz · Oct 10, 2010 · r-help

Dear Arne, this looks promising! Thank you very much. Best, Holger -- View this message in context: http://r.789695.n4.nabble.com/Hausman-test-for-endogeneity-tp2969522p2970564.html Sent from the R help mailing list archive at Nabble.com.

Simulating correlations with varying sample sizes
Holger Steinmetz · May 16, 2011 · r-help

Wow, this was fast and helpful! Thank you very much. Best, Holger -- View this message in context: http://r.789695.n4.nabble.com/Simulating-correlations-with-varying-sample-sizes-tp3526231p3526288.html Sent from the R help mailing list archive at...

Hausman test for endogeneity
Holger Steinmetz · Oct 9, 2010 · r-help

Dear folks, can anybody point me in the right direction on how to conduct a hausman test for endogeneity in simultanous equation models? Best, Holger -- View this message in context: http://r.789695.n4.nabble.com/Hausman-test-for-endogeneity...

Metafor: Differences between two categories of a moderator
Holger Steinmetz · Jun 1, 2011 · r-help

Hi Wolfgang that's good news. One further small follow-up question: When I conduct multiple comparisons via the relevel-command: should I adjust the p-value? Thanks in advance, Holger -- View this message in context: http://r.789695.n4...

Cluster analysis with missing data
Holger Steinmetz · Jul 13, 2009 · r-help

Hi folks, I tried for the first time hclust. Unfortunately, with missing data in my data file, it doesn't seem to work. I found no information about how to consider missing data. Omission of all missings is not really...

Hausman test for endogeneity
Holger Steinmetz · Oct 10, 2010 · r-help

Dear Liviu, thank you very much. After inspecting the options, I *guess* that systemfit is what I need. However, I absolutely don't understand how it works. I searched long for a detailed documentation (beyond the rather cryptic standard documentation...

Creating a list by just using start and final component
Holger Steinmetz · May 24, 2009 · r-help

Hi there, say, I have 100 matrices (m1,m2,...,m100) which I want to combine in a list. The list, thus, shall contain the matrices as components. Is it necessary to mention all 100 matrices in the list() command? I...

Eliminating case numbers in a dendrogram
Holger Steinmetz · Jul 18, 2010 · r-help

Hi folks, I conducted a hierarchical cluster analysis. As I wanted to illustrate the result, I created a dendrogram with the code plot(as.dendrogram(fit),sub="",xlab="",ylab="Heterogeneity",nodePar = list(lab.cex=.5,pch=NA,xlab="")) However, the...

Multivariate Transformations
Holger Steinmetz · May 27, 2009 · r-help

Hello folks, many multivariate anayses (e.g., structural equation modeling) require multivariate normal distributions. Real data, however, most often significantly depart from the multinormal distribution. Some researchers (e.g., Yuan et al., 2000) have proposed a multivariate transformation of the...

Problem with using flexmix for regression mixtures
Holger Steinmetz · May 7, 2015 · r-help

Hi there, I would like to conduct a mixture regression analysis with the flexmix Package. Was just playing around with the function stepFlexmix() and did not get a foot into the door. When I run the stepFlexmix-function, I get...

Hausman Test
Holger Steinmetz · Jan 16, 2011 · r-help

Hi, can anybody tell me how the Hausman test for endogenty works? I have a simulated model with three correlated predictors (X1-X3). I also have an instrument W for X1 Now I want to test for endogeneity of X1...

Metafor: Differences between two categories of a moderator
Holger Steinmetz · May 31, 2011 · r-help

Hi there, when using the metafor package for testing mixed effects models with categorical moderators, I get a regression table reporting betas. These betas are mean differences between a certain category in the effect size to the reference category (intercept...

Simulating correlations with varying sample sizes
Holger Steinmetz · May 16, 2011 · r-help

Hi there, I would like to draw 10 correlations from a bivariate population - but every draw should be done with a different sample size. I thought I could to this with a loop: r=numeric(10) #Goal vector N = c...

Multidimensional scaling
Holger Steinmetz · Oct 30, 2009 · r-help

Hi there, when conducting a multidimensional scaling analysis, it is possible to do this on a correlation matrix? I calculated a dissimilarity matrix by substracting the corr.matrix from 1. Then I calculated the distance matrix with d <- dist(dissimilarity...

Multidimensional scaling on a correlation matrix
Holger Steinmetz · Oct 30, 2009 · r-help

Hi there, when conducting a multidimensional scaling analysis, it is possible to do this on a correlation matrix? I calculated a dissimilarity matrix by substracting the corr.matrix from 1. Then I calculated the distance matrix with d <- dist(dissimilarity...

Hausman Test
Holger Steinmetz · Jan 16, 2011 · r-help

Dear Achim, thank you very much. One follow up question. The Hausman-test always gives me a p-value of 1 - no matter how small the statistic is. I now generated orthogonal regressors (X1-X3) and the test gives me...

Creating a list by just using start and final component
Holger Steinmetz · May 24, 2009 · r-help

Wow, thank you so much! Where can I learn such creative approaches? Best, Holger Romain Francois-2 wrote: > > Hollix wrote: >> Hi there, >> >> say, I have 100 matrices (m1,m2,...,m100) which I want to combine in a >> list. >> The list...

Eliminate cases in a subset of a dataframe
Holger Steinmetz · Sep 14, 2009 · r-help

Hi folks, I created a subset of a dataframe (i.e., selected only men): subdata <- subset(data,data$gender==1) After a residual diagnostic of a regression analysis, I detected three outliers: linmod <- lm(y ~ x, data=subdata) plot(linmod...

Eliminate cases in a subset of a dataframe
Holger Steinmetz · Sep 14, 2009 · r-help

Hi Guys, thank you all for you comments. Actually, I had a typo and you'r right that it should be "subdata[-c(11,22,33) , ]" However, this does not work well either. I think, I know the reason: In...

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