On Jul 25, 2011, at 12:31, Daniel Malter <dan...@umd.edu> wrote: > Hi, > > I hope this is for private purposes. Otherwise, I may cite David Winsemius: > "The advancement of science would be safer if you knew what you were doing."
Hmm, even if it were not private, the science of FPS video games is a dangerous place---I would hazard the guess it would survive the misspecification. > > First, your regression command is inverted. You ought to regress SoloKills > on range, not vice versa. > > abline(lm(graph~range)) #does the trick > > Second, given the figure, a linear specification is obviously a > misspecification of your model, unless you account for autocorrelation. > > pacf(reg$res,plot=T) > > HTH, > Daniel > > > > > DimmestLemming wrote: >> >> I don't usually do much with graphs in R, and this is my first time adding >> a line of best fit. Hopefully this is an easy problem to solve. >> >> I'm looking at a variable called soloKills along the range 5:28. Here are >> all my commands, in script form: >> >> range=5:28 >> graph=soloKills >> title="Solo kill/death data" >> xlabel="Number of deaths/1 game" >> ylabel="Mean number of kills/1 game" #No problems with the scatterplot >> >> plot(x=range, y=graph, main=title, xlab=xlabel, ylab=ylabel, ylim=c(0,20)) >> >> abline(lm(range~graph)) >> >> I checked several websites, the abline(lm(/x-variable/~/y-variable/)) >> format *should* work. But here is what happens: >> >> http://r.789695.n4.nabble.com/file/n3693567/Regression_problem.png >> >> The line is obviously far too steep. I can guarantee there are no outliers >> in soloKills to throw it off: >> >>> soloKills >> [1] 9.040472 10.184595 11.201935 12.130823 13.583477 14.098845 14.489703 >> [8] 15.329752 15.562500 15.884757 16.239704 16.513289 16.383912 16.547543 >> [15] 16.823374 17.051370 17.027644 17.300562 17.641723 17.702673 18.436170 >> [22] 18.783562 19.274419 21.373832 >> >> Can anyone help me fix the regression line? Thanks! >> > > -- > View this message in context: > http://r.789695.n4.nabble.com/Trouble-with-line-of-best-fit-tp3693567p3693745.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. ______________________________________________ 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.
