try this: x <- t.test(1:10)
x$conf.int attr(x$conf.int, "conf.level") I hope it helps. Best, Dimitris On 8/9/2010 8:39 PM, Etienne Stockhausen wrote:
Good afternoon everybody, I'm writing a little function to visualise hypothesis testing. Therefore I need to extract the confidence level of a t-test. Here a little example: x <- str(t.test(1:10) gives List of 9 $ statistic : Named num 5.74 ..- attr(*, "names")= chr "t" $ parameter : Named num 9 ..- attr(*, "names")= chr "df" $ p.value : num 0.000278 $ conf.int : atomic [1:2] 3.33 7.67 ..- attr(*, "conf.level")= num 0.95 $ estimate : Named num 5.5 ..- attr(*, "names")= chr "mean of x" $ null.value : Named num 0 ..- attr(*, "names")= chr "mean" $ alternative: chr "two.sided" $ method : chr "One Sample t-test" $ data.name : chr "1:10" - attr(*, "class")= chr "htest" Now I can use x$conf.int what gives [1] 496.9141 499.6276 attr(,"conf.level") [1] 0.95 In the example I try to extract the value 0.95 but I have no Idea how. I hope somebody can help me. Thanks in advance an greetings from Berlin Etienne ______________________________________________ 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.
-- Dimitris Rizopoulos Assistant Professor Department of Biostatistics Erasmus University Medical Center Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands Tel: +31/(0)10/7043478 Fax: +31/(0)10/7043014 ______________________________________________ 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.
