see inline. On Fri, Dec 3, 2010 at 11:03 PM, <[email protected]> wrote: > Hi everyone, > > i don't get the qqplot which is used to test if the sample followed a > t-distribution? > > qqplot(qt(ppoints(z), df = 7.6), z, xlab = "Q-Q plot for t dsn") > qqline(z) > > what qt() means? what ppoints() means? You must learn to answer such questions yourself by typing ?qt ?ppoints
> > I know qqnorm() will plots the data in the way of normal distribution. how to > make the qqplot to plot the data in the form of t-distribution? > > Or is there any command can actually test if the imput data is > t-distribution? like the shapiro.test(x) used to test the normality. > > > Thank you so much, guys. > > > Sincerely, > > > Bill > > ----- Original Message ----- > From: Michael Bedward <[email protected]> > Date: Friday, December 3, 2010 7:48 pm > Subject: Re: [R] testing and ploting t-distribution > To: [email protected] > Cc: [email protected] > >> Hello Bill, >> >> Have a look at the example at the bottom of the help page for ?qqplot >> >> Michael >> >> >> On 4 December 2010 11:19, <[email protected]> wrote: >> > Hi there, >> > >> > >> > I am doing a test to see the the residual is distributed in >> the form of t-distribution and trying to plot the residuals and >> the t-distribution to compare in the graph. >> > >> > Cheers, >> > >> > Bill >> > >> > >> > >> > ----- Original Message ----- >> > From: [email protected] >> > Date: Wednesday, December 1, 2010 1:29 am >> > Subject: confirm 1f8ffd55c611e2b0ed4ed4d2b79a8d9b30182a95 >> > To: [email protected] >> > >> >> Mailing list subscription confirmation notice for mailing >> list R-help >> >> >> >> We have received a request from 129.132.148.130 for >> subscription of >> >> your email address, "[email protected]", to the [email protected] >> >> mailing list. To confirm that you want to be added to this >> >> mailinglist, simply reply to this message, keeping the >> Subject: header >> >> intact. Or visit this web page: >> >> >> >> https://stat.ethz.ch/mailman/confirm/r- >> >> help/1f8ffd55c611e2b0ed4ed4d2b79a8d9b30182a95 >> >> >> >> Or include the following line -- and only the following line - >> - >> >> in a >> >> message to [email protected]: >> >> >> >> confirm 1f8ffd55c611e2b0ed4ed4d2b79a8d9b30182a95 >> >> >> >> Note that simply sending a `reply' to this message should >> work from >> >> most mail readers, since that usually leaves the Subject: line >> >> in the >> >> right form (additional "Re:" text in the Subject: is okay). >> >> >> >> If you do not wish to be subscribed to this list, please simply >> >> disregard this message. If you think you are being maliciously >> >> subscribed to the list, or have any other questions, send >> them to >> >> [email protected]. >> >> >> > >> > [[alternative HTML version deleted]] >> > >> > >> > ______________________________________________ >> > [email protected] 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. >> > >> > >> > > [[alternative HTML version deleted]] > > > ______________________________________________ > [email protected] 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. > > ______________________________________________ [email protected] 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.
