On Apr 30, 2012, at 20:27 , Saint wrote: > Trying to do a regression for four variables. I get information only for two. > The rest is marked "NA". Why? And what does NA mean?
Your design matrix is singular since p is constant and p+Sweden.infl.dev=Sweden.infl, so two coefficients are set to missing -- effectively, the corresponding predictors are removed from the model. You may have to read up on the basics of multiple regression. > > Thanks! > > >> Sweden.infl.dev <- c(0.2, 0.6, -1, -0.2, -1, -1.5, -0.7, 0.7, -0.1, 0.3) > >> Sweden.GDP.gap <- c(-0.024662769, -0.01519859, -0.027251109, -0.027129556, >> -0.014561961, 0.007291667, 0.02695406, 0.01179481, 0.008348032, >> 0.000000000683083) > >> Sweden.nom.int.rate <- c(7.6, 8.91, 4.1, 4.35, 3.4, 3.25, 4, 3.75, 3.75, >> 2.75) > >> Sweden.infl <- c(2.2, 2.6, 1, 1.8, 1, 0.5, 1.3, 2.7, 1.9, 2.3) > >> p <- c(2, 2, 2, 2, 2, 2, 2, 2, 2, 2) > >> Sweden.Taylor.nom.p.infl <- lm(Sweden.nom.int.rate ~ Sweden.infl.dev + >> Sweden.GDP.gap + p + Sweden.infl) > > Call: > lm(formula = Sweden.nom.int.rate ~ Sweden.infl.dev + Sweden.GDP.gap + > p + Sweden.infl) > > Coefficients: > (Intercept) Sweden.infl.dev Sweden.GDP.gap p > 4.675 1.212 -43.695 NA > Sweden.infl > NA > > > -- > View this message in context: > http://r.789695.n4.nabble.com/Regression-tp4598984.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Peter Dalgaard, Professor Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd....@cbs.dk Priv: pda...@gmail.com ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
