Scilab Website | Contribute with GitLab | Mailing list archives | ATOMS toolboxes
Scilab Online Help
5.4.0 - Русский

Change language to:
English - Français - 日本語 - Português -

Please note that the recommended version of Scilab is 2024.1.0. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Statistics > Cumulated Distribution Functions > cdft


cumulative distribution function Student's T distribution

Calling Sequence




six real vectors of the same size.

P,Q (Q=1-P)

The integral from -infinity to t of the t-density. Input range: (0,1].


Upper limit of integration of the t-density. Input range: ( -infinity, +infinity). Search range: [ -1E150, 1E150 ]


Degrees of freedom of the t-distribution. Input range: (0 , +infinity). Search range: [1e-300, 1E10]


Calculates any one parameter of the T distribution given values for the others.

Formula 26.5.27 of Abramowitz and Stegun, Handbook of Mathematical Functions (1966) is used to reduce the computation of the cumulative distribution function to that of an incomplete beta.

Computation of other parameters involve a seach for a value that produces the desired value of P. The search relies on the monotinicity of P with the other parameter.

Report an issue
<< cdfpoi Cumulated Distribution Functions Central Tendency >>

Copyright (c) 2022-2024 (Dassault Systèmes)
Copyright (c) 2017-2022 (ESI Group)
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Mon Oct 01 17:41:08 CEST 2012