[R] bootstrap a multinomial regression

Dear friends, does anyone know how I can bootstrap a multinomial regression (say using mlogit or multinom from the nnet package) in a way similar to the one implemented bybootStepAIC?  Thanks   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus

Re: [R] many don't know responses

the loglikelihood of the two regression equations. Is this doable or am I talking nonsense? Thank you for your time Jason   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted

Re: [R] Regression for Rank Order Dependent Variable

measurements data, Biometrica, 90 (3), 732-740. Any other ideas will be well received. Thank you   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help@r-project.org

Re: [R] kruskal wallis post hoc?

Thank you for the result, I will have a look at the link.   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From: Tal Galili tal.gal...@gmail.com To: Iasonas Lamprianou lampria...@yahoo.com Cc: r-help@r-project.org r

[R] kruskal wallis post hoc?

% and made no bonferroni or other correction for the pairwise comparisons) Thank you   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help@r-project.org mailing list

Re: [R] multivariate problem

is such a strange day, factor analyzing the data before DayX and after DayX separately would give me different factors (princial components). But how can I identify such a daym without trial and error? Thank you for the help...   Dr. Iasonas Lamprianou Department of Social and Political Sciences

Re: [R] multivariate problem

Thank you, I will have a look at rollapply   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From: David Winsemius dwinsem...@comcast.net To: Iasonas Lamprianou lampria...@yahoo.com Cc: r-help@r-project.org r-help@r

Re: [R] multivariate problem

Thank you, I downloaded the vignettes and I am currently studying it. It seems pretty good!   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From: Clifford Long gnolff...@gmail.com To: Iasonas Lamprianou lampria

Re: [R] likert scale analysis with R

. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R

Re: [R] likert scale analysis with R

Thank you for the hint. But this means that I will still have missing responses in my data and this defeats my purpose to analyse the data using cluster analysis.   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From

Re: [R] likert scale analysis with R

Hmmm, maybe I will try this as an excercise, thank you Jim   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From: Jim Lemon j...@bitwrit.com.au To: Iasonas Lamprianou lampria...@yahoo.com Cc: r-help@r-project.org r-help@r

[R] Latent Class with covariates

probabilities will be coninuous(???) dependent variables? Thnk you for the help Jason Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help@r-project.org mailing

Re: [R] zero truncated poisson regression

does ?zerotrunc return?   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From: Achim Zeileis achim.zeil...@uibk.ac.at To: Iasonas Lamprianou lampria...@yahoo.com Cc: Mitchell Maltenfort mmal...@gmail.com; r-help@r

[R] zero truncated poisson regression

Dear friends, does anyone know how I can run a zero truncated poisson regression using R (or even SPSS)?   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help

Re: [R] zero truncated poisson regression

Thank you all for the ideas   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus From: Mitchell Maltenfort mmal...@gmail.com To: Iasonas Lamprianou lampria...@yahoo.com; r-help@r-project.org r-help@r-project.org Sent: Sunday

Re: [R] zero truncated poisson regression

the message invalid dependent variable, minimum count is not zero. Well, I know that N0, that is why want to run a zero-truncated model. But I must be missing something...and the manual does not seem to help a lot... Can anyone help please?   Dr. Iasonas Lamprianou Department of Social and Political

[R] eRm question

for your time   Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

[R] Fw: Value of 'pi'

Indeed, Indiana had a go at pi. Have a look here http://en.wikipedia.org/wiki/Indiana_Pi_Bill Dr. Iasonas Lamprianou Department of Social and Political Sciences University of Cyprus [[alternative HTML version deleted]] __ R-help@r

Re: [R] regression and lmer

Dear all,  I hope this is the right place to ask this question. I am reviewing a research where the analyst(s) are using a linear regression model. The dependent variable (DV) is a continuous measure. The independent variables (IVs) are a mixture of linear and categorical variables. The

[R] regression questions (lm, lmer)

Dear all,  I hope this is the right place to ask this question. I am reviewing a research where the analyst(s) are using a linear regression model. The dependent variable (DV) is a continuous measure. The independent variables (IVs) are a mixture of linear and categorical variables. The

[R] variance inflation factors

it not work? Maybe a bug? I use Windows Vista and everything else seems to work OK. Thank you Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22

[R] factor names

. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University of Manchester

Re: [R] factor names

Thank you Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education

[R] missing values

that a missing response is a zero? Thank you for the response Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research

Re: [R] missing values

thank you, I'll have a go and let you know if i have problems Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary

Re: [R] missing values

thank you, I'll have a good look and come back to you if necessary Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539

[R] ergm

For this model, the pseudolikelihood is the same as the likelihood. Null Deviance: 92092 on 66430 degrees of freedom Residual Deviance: 67948 on 66421 degrees of freedom Deviance: 24144 on 9 degrees of freedom AIC: 67966BIC: 68048 Dr. Iasonas Lamprianou

[R] ergm crashes

mesa - faux.mesa.high plot(mesa) summary(mesa) plot(mesa, vertex.col='Grade') legend(“bottomleft”,fill=7:12,legend=paste(“Grade”,7:12),cex=0.75) fauxmodel.01 - ergm(mesa ~edges + nodematch('Grade',diff=T) +nodematch('Race',diff=T) ) summary(fauxmodel.01) Dr. Iasonas Lamprianou Assistant

[R] Standardized logistic regression coefficients

Thanks Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University

[R] Standardized Logistic Regression coefficients

no reference to interquartile-range odds ratios Thanks Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow

Re: [R] two questions

This sounds interesting, thank you. I'll have a look. jason Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary

Re: [R] two questions

thanks for the response we are talking about 7 cities. If I run a two-way anova, I find the residuals skewed and non-normal. I'll try the rlm method and see what happens. Thanks to all of you for the support. Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation

Re: [R] two questions

? Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University

[R] two questions

-parametric equivalents, that might be great. (2) Also, if the interaction of gender and city of birth is statistically significant, which post-hoc tests should I run? Thanks Jason Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences

[R] kruskalmc

Hi, I would like to find out if the kruskalmc command in the pgirmess package controls for the family-wise type-I error rate. Thank you Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006

[R] Cohen's f

Dear all, does anyone know how I can use any package in R to compute ANOVA's omega squared or Cohen's f? Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357

[R] anova and lm results differ

110104 227.6296 2e-16 *** cntry:edf 244 0.4987 0.73672 Residuals 38754 3205 --- Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1 Unfortunately, the results are different. Could anyone, please, explain why? Dr. Iasonas

Re: [R] anova and lm results differ

Thank you, it seems that I need to do some reading... Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research

Re: [R] anova and lm results differ

So, should I avoid using the Anova option of the Rcmdr and use aov instead (as I have been doing)? Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22

Re: [R] Brown-Forsythe test of equality of MEANS

Thank you. It seems that nobody has implemented it in R yet. I'll have a look, thank you very much Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel

Re: [R] Brown-Forsythe test of equality of MEANS

for the suggestions Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education

[R] Brown-Forsythe test of equality of MEANS

questions: 1. Is there a function ready to use for calculating the Brown-Forsythe F*? 2. If not, what do people use for checking the results of a (one-way) ANOVA when there is non-normality as well as non-constant variances? Thanks, Dr. Iasonas Lamprianou Assistant Professor

Re: [R] Brown-Forsythe test of equality of MEANS

for your help. Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department

[R] Deviance Residuals

? Thank you Jason Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University

Re: [R] Deviance Residuals

that's enough, thank you now I need to do some more background reading... cheers Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22

Re: [R] Deviance Residuals

, Manchester M13 9PL, UK Tel. 0044 161 275 3485 iasonas.lampria...@manchester.ac.uk --- On Fri, 20/8/10, David Winsemius dwinsem...@comcast.net wrote: From: David Winsemius dwinsem...@comcast.net Subject: Re: [R] Deviance Residuals To: Iasonas Lamprianou lampria...@yahoo.com Cc: r-help@r

[R] m-estimators

Dear colleagues can somebody help me by showing how we can compute m-estimators in R? thanks Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178

Re: [R] split file equivalent in R

am mostly interested to find easy solutions for my students. They are not mathematically/programming oriented (I am working in Education) Thank you for your response Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European

Re: [R] split file equivalent in R

Thank you, I'll have a look \ Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department

Re: [R] prettyR

Thank you, I'll have a go and if I have more questions I'll probably come back to you... Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax

Re: [R] prettyR

Thank you, I'll have a go and if I have more questions I'll probably come back to you... Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax

[R] prettyR

Hi all, does anyone have any practical examples of how this command can be used in prettyR? add.value.labels(x,value.labels) I mean, can we have the SPSS style of using numbers and/or labels if we want to? Thank you for your time Jason Dr. Iasonas Lamprianou Assistant Professor

Re: [R] ordinal variables

This is valuable material, thanks for all the help. I'll need many days to go through this information jason Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel

Re: [R] ordinal variables

Dear colleagues, I teach statistics using SPSS. I want to use R instead. I hit on one problem and I need some quick advice. When I want to work with ordinal variables, in SPSS I can compute the median or create a barchart or compute a spearman correlation with no problems. In R, if I read the

Re: [R] ordinal variables

Thank you Joris, I'll have a look into the commands you sent me. They look convincing. I hope my students will also see them in a positive way (although I can force them to pretend that they have a positive attitude)! Dr. Iasonas Lamprianou Assistant Professor (Educational Research

Re: [R] ordinal variables

Thanks, I'll have a go and will let you know. I guess that the success has to do with how efficiently I help them to demonstrate the efficiency of code over menues. So part of the issue is how I teach them as well... Dr. Iasonas Lamprianou Assistant Professor (Educational Research

[R] anova post hoc tests

Hi everybody does anyone know how I can run ANOVA post-hoc tests using R commander or R in general? Thank you Dr. Iasonas Lamprianou __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting

Re: [R] anova post hoc tests

Thanks, this is a good solution Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow

Re: [R] error bars

/ill_bet_you_dont_understand_er.php jason Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department

Re: [R] error bars

thank you Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University

Re: [R] ordinal regression

to many 'empty cells' in ordinal regression? How many empty cells are too many? Do you have a reference for me to read? Thank you for the support Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O

Re: [R] histbackback

Dear all, does anyone know how I can run the histbackback function from R Commander? I am going to teach this in my class and I hesitate to ask my students to write code Thanks Jason __ R-help@r-project.org mailing list

Re: [R] installation

installation in their bags, and they can use it on any machine. Is this possible? Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539

Re: [R] anova

Dear friends, I have run an ANOVA using a linear variable as dependent and a nominal variable with five groups as independent (factor). The F test is statistically significant F(4, 431)=2.54, p=0.036.However, the multiple comparisons have shown no difference between any two groups (no matter

Re: [R] stats question

Amazing responses to ,y question, and very fast, thanks all of you!  Dr. Iasonas Lamprianou Department of Education The University of Manchester Oxford Road, Manchester M13 9PL, UK Tel. 0044 161 275 3485 [EMAIL PROTECTED] - Original Message From: Marc Schwartz [EMAIL PROTECTED

[R] stats question

Dear friends, I am not sure that this is the right place to ask,  but please feel free to suggest an alternative discussion group. My question is that I want to do a comparative study in order to compare the rate of incidence in two populations. I know that a pilot study was conducted a few