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4 results for “from:Ulrich Morawetz”

summary.plm error
Ulrich Morawetz · Apr 7, 2009 · r-help

An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090407/b70ccbac/attachment-0001.pl>

Contingent Valuation Method estimation function
Ulrich Morawetz · Mar 12, 2010 · r-help

Hello, I have been teaching a part of a lecture on "Valuation Methods of Natural Resources" where I covered contingent valuation method. Students collected data using a double-bounded contingent valuation method questioning technique and we analysed them with a...

plm summary error
Ulrich Morawetz · Aug 3, 2009 · r-help

Dear "plm"-Package insiders, [I posted the following observation is April already but unfortunately I am not aware of any answers. With the hope that someone found an answer in the mean time, I ask again:] I realized the following...

pgmm error with lags higher than 2 in GMM instruments (package plm)
Ulrich Morawetz · Jul 15, 2010 · r-help

Hello Giovanni, Hello Yves, Hello R-help-Readers, I re-run an old code of mine which uses the pgmm() function (and which used to work with an older versions) under plm version 1.2-4 and got the following...

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