search for: tinv

Hello all... I am really new to statistics and I am trying to figure out a way to apply Chauvenet's criterion using the t-distribution on a set of numbers in perl. I was unable to find a TDIST and TINV function for perl. I am getting these functions from Excel. So, I figured that I would install R and call it from perl, overkill for what I need I know. I am having a hard time figuring out how to mimick the Excel TDIST and TINV functions in R. Can somebody give me a hand with this? Thanks in...

Does anybody has a function or idea how to calculate qt with a noncentrality parameter? I'm porting a SAS-macro for equivalence (Wellek, 1994 TT2ST) to R and it seems that I need this to calculate tinv (SAS-command, I hope that this is R's qt,...I get the SAS-macro manual next week). thanks Peter -- P.Malewski, Limmerstr.47, 30451 Hannover, 0511-2135008 At work: http://www.MH-Hannover.de 0511 532 3194 / Fax: 0511 532 3190, P.Malewski at tu-bs.de, peter.malewski at gmx.de, malewski.pete...

Dear Sir/Madam, I am trying to use calculation for two-tailed inverse of the student`s t-distribution function presented by Excel functions like =TINV(probability, deg_freedom). For instance: The Excel function =TINV(0.0000408831,1221) = returns 4.0891672. Would you like to show me a manual calculation for this? Appreciate your helps in advance. Cheers! Andre [[alternative HTML version deleted]]