Hi Huaru, Are you sure you are looking at 0.95 and NOT 0.975? as qt(0.975,9) = 2.262
generally tables are given for alpha/2 (alpha=0.05 in your case) significance. Please check carefully. Thx, S. On Sat, Nov 7, 2009 at 4:02 AM, huaru wang <huaru.w...@gmail.com> wrote: > Hello, every one, > > Using the qt() function in R, I got a different Student t-value with the > Student t table. > e.g. the return value of function qt(0.95,9) is 1.833, while in table it is > 2.262. > > I do not know why the difference exists. I guess it may be a bug in R. > -- > Íõ»¯Èå ²©Ê¿Ñо¿Éú > ±±¾©Ê¦·¶´óѧ¾°¹ÛÉú̬Óë¿É³ÖÐøÐÔ¿ÆѧÑо¿ÖÐÐÄ > ±±¾©Êк£µíÇøнֿÚÍâ´ó½Ö19ºÅ±±¾©Ê¦·¶´óѧÉúÃü¿ÆѧѧԺ 100875 > Huaru Wang > PhD Candidate, CLESS, College of Life Science, Beijing Normal University > Tel: 010 - 5880 5812 > Cell phone:189 0137 6067 > No.19 Xinjiekouwai Street, Beijing 1000875 > > [[alternative HTML version deleted]] > > > ______________________________________________ > 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. > > [[alternative HTML version deleted]]
______________________________________________ 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.
