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13 results for “from:Mathew, Abraham T”

Model Fit Statistics in a Logit Model
Mathew, Abraham T · Jul 26, 2010 · r-help

I'm running a logistic regression model in R. I've used both the Zelig and Car packages. However, I'm wondering if there is a simple way to get the model fit statistics for the model. (pseudo R-square...

Zelig: Error message for 'mlogit'
Mathew, Abraham T · Mar 24, 2010 · r-help

I'm running a multinomial logit in R using the Zelig package. However I get the following error. HELP anes96two <- zelig(trade962a ~ age962 + education962 + personal962 + economy962 + partisan962 + employment962 + union962 + home962 + market962 + race962 + income962, model="mlogit", data=data96) #Error in attr...

read.xls question
Mathew, Abraham T · Mar 14, 2009 · r-help

I'm an R newbie and had a question about the read.xls function. I've heard that this is often not a reliable function to use for importing data. However, I have created numerous xls files which contain information...

Running a Logit Model in R
Mathew, Abraham T · Jan 30, 2010 · r-help

I'm an R newbie and had the following question. I'm trying to run a logit model because I have a dependant variable that is a factor with three levels. Each of my independent variables are factor variables and...

Logistic Regression in Zelig
Mathew, Abraham T · Jun 19, 2010 · r-help

I'm running a logit model using the zelig package in R: z.out <- zelig(trade961a ~ age962 + education962 + personal962 + economy962 + partisan962 + employment962 + union962 + home962 + market962 + race962 + income962, data=data96, model="logit") The dependent variable, trade961a, is a dichotomous factor variable...

Error message
Mathew, Abraham T · Mar 22, 2010 · r-help

I'm recoding variables and running a logit. Unfortunately, I get the following error. data04$V043114 part <- data04$V043114 attributes(part) summary(part) partb < part partb[part %in% levels(part)[4]] <- NA partb[part %in% levels(part)[5]] <- NA partb...

Changing an unordered factor into an ordered factor
Mathew, Abraham T · Feb 3, 2010 · r-help

I'm trying to change an unordered factor into an ordered factor: data96$RV961327 <- data96$V961327 data96$RV961327[data96$V961327 %in% levels(data96$V961327)[4]] <- NA data96$RV961327[data96$V961327 %in% levels(data96$V961327)[5]] <- NA data96$RV961327 <- factor(data96...

R outputs in Tinn-R
Mathew, Abraham T · Jan 24, 2009 · r-help

I have been using R and Tinn-R for the last few weeks. While I prefer Tinn-R to Emacs as my text editor, I have been unable to calibrate Tinn-R so that the R outputs will be translated...

Recoding Variables in R
Mathew, Abraham T · Jan 28, 2010 · r-help

VAR 980490 Some people have suggested placing new limits on foreign imports in order to protect American jobs. Others say that such limits would raise consumer prices and hurt American exports. Do you FAVOR or OPPOSE placing new limits on...

Ordered Logit in R
Mathew, Abraham T · Feb 17, 2010 · r-help

I'm trying to run an ordered logistic regression model. I've run the following code, but the output does not provide the p-values. Is there some command to include the p-values in the output. reg2 <- polr(trade1...

Ordered logit in R
Mathew, Abraham T · Feb 17, 2010 · r-help

I ran the follow code for an ordered logit, but don't know why two levels of my dependent variable are at the topic of my list of variables. I don't know why this appears, and what I'm...

Question about 'logit' and 'mlogit' in Zelig
Mathew, Abraham T · Mar 29, 2010 · r-help

I'm running a multinomial logit in R using the Zelig packages. According to str(trade962a), my dependent variable is a factor with three levels. When I run the multinomial logit I get an error message. However, when I run...

Changing an unordered factor into an ordered factor
Mathew, Abraham T · Feb 4, 2010 · r-help

1. I need to make it an ordered factor in order to run ordered logit. I could keep it unordered and run a multinomial logit, but that's beyond my capacity as a new social science grad student (can't...

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