Hi all, though i know this is a simple question, i really hope someone could. I am just trying to compare percents respectively the difference in percents by a simple test. t.test usually compares means and is working like it is supposed to be. Now i wonder how i can use a test in R to test for significant difference between two percentages. http://survey.scantron.com/resources/significant-calc.htm is pretty much all i need. How can i solve this in R ? thx in advance m.
t-test between percentages
4 messages · Bunny, lautloscrew.com, Bert Gunter, David Winsemius +1 more
Sounds like a homework problem. Consult any basic statistics text. Hint: You don't use a t-test to test for a difference in percentages. Check "chi-squared" and/or "contingency table." Cheers, Bert Gunter -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Bunny, lautloscrew.com Sent: Wednesday, September 17, 2008 9:41 AM To: r-help at r-project.org Subject: [R] t-test between percentages Hi all, though i know this is a simple question, i really hope someone could. I am just trying to compare percents respectively the difference in percents by a simple test. t.test usually compares means and is working like it is supposed to be. Now i wonder how i can use a test in R to test for significant difference between two percentages. http://survey.scantron.com/resources/significant-calc.htm is pretty much all i need. How can i solve this in R ? thx in advance m. ______________________________________________ R-help at 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.
On Sep 17, 2008, at 12:41 PM, Bunny, lautloscrew.com wrote:
Hi all, though i know this is a simple question, i really hope someone could. I am just trying to compare percents respectively the difference in percents by a simple test. t.test usually compares means and is working like it is supposed to be. Now i wonder how i can use a test in R to test for significant difference between two percentages. http://survey.scantron.com/resources/significant-calc.htm is pretty much all i need. How can i solve this in R ?
?prop.test
Check prop.test().
At 12:41 PM 9/17/2008, Bunny, lautloscrew.com wrote:
Hi all, though i know this is a simple question, i really hope someone could. I am just trying to compare percents respectively the difference in percents by a simple test. t.test usually compares means and is working like it is supposed to be. Now i wonder how i can use a test in R to test for significant difference between two percentages. http://survey.scantron.com/resources/significant-calc.htm is pretty much all i need. How can i solve this in R ? thx in advance m.
______________________________________________ R-help at 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.
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