.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.13.
.TH GBTEST "1" "March 2022" "gbtest 6.3" "User Commands"
.SH NAME
gbtest \- Compute statistical tests on data
.SH SYNOPSIS
.B gbtest
[\fI\,options\/\fR] \fI\,<tests list>\/\fR
.SH DESCRIPTION
Compute statistical tests on data. Each test is specified by a unique
name and optional parameters follows, separated by commas. Depending
on the test, one, two or three columns of data are expected. '1 dist'
tests expect data in [0,1] from a distribution function. '1 sample'
tests expect a single columns. Test on 'pairs' expect two columns of
equal length. Test on '2 samples' expect two columns of data, possibly
of different length. Test on 2+ and 3+ samples expect a varying number of
columns. If more columns are provided, the test is repeated for any
column in the case of 1 sample test, and any couple of columns in the case
of 2 sample tests. In the last case, the output is expressed in matrix
format, with estimated statistics on the lower triangle and p\-scores
(if requested) on the upper. The removal of 'nan' entries is automatic,
and is performed consistently with the nature of the test.
.PP
Tests typically assume 1, 2 or 3+ samples. Available tests are:
.TP
D+,D\-,D,V 1 dist
Kolmogorov\-Smirnov tests on cumulated data
.TP
W2,A2,U2
1 dist   Cramer\-von Mises tests on cumulated data
.TP
CHI2\-1
1 samp   Chi\-Sqrd, 1 samp. 2nd column: th. prob.
.TP
WILCO
1 samp   Wilcoxon signed\-rank test (mode=0)
.TP
TS
1 samp   Student's T (mean=0)
.TP
TR\-TP
1 samp   Test of randomness: turning points
.TP
TR\-DS
1 samp   Test of randomness: difference sign
.TP
TR\-RT
1 samp   Test of randomness: rank test
.TP
R
pairs    Pearson's correlation coefficient
.TP
RHO
pairs    Spearman's Rho rank correlation
.TP
TAU
pairs    Kendall's Tau correlation
.TP
CHI2\-2
pairs    Chi\-Sqrd, 2 samples
.TP
TP
pairs    Student's T with paired samples
.TP
WILCO2
pairs    Wilcoxon test on paired samples
.TP
KS
2 samp   Kolmogorov\-Smirnov test
.TP
T
2 samp   Student's T with same variances
.TP
TH
2 samp   Student's T with different variances
.TP
F
2 samp   F\-Test for different variances
.TP
WMW
2 samp   Wilcoxon\-Mann\-Whitney U
.TP
FP
2 samp   Fligner\-Policello standardized U^
.TP
LEV\-MEAN
2+ samp  Levene equality of variances using means
.TP
LEV\-MED
2+ samp  Levene equality of variances using medians
.TP
KW
3+ samp  Kruscal\-Wallis test on 3+ samples
.TP
CHI2\-N
3+ samp  Multi\-columns contingency table analysis
.SH OPTIONS
.TP
\fB\-p\fR
compute associated significance
.TP
\fB\-s\fR
input data are already sorted in ascending order
.TP
\fB\-F\fR
specify the input fields separators (default " \et")
.TP
\fB\-o\fR
set the output format (default '%12.6e')
.TP
\fB\-v\fR
verbosity: 0 none, 1 headings, 2+ description (default 0)
.TP
\fB\-h\fR
this help
.SH EXAMPLES
.TP
gbtest FP < file
compute the Fligner\-Policello test on the columns
of 'file', considering all possible pairings.
.TP
gbtest KW \-p < file
compute the Kruscal\-Wallis test and its p\-score
on the first three columns of data in 'file'
.SH AUTHOR
Written by Giulio Bottazzi
.SH "REPORTING BUGS"
Report bugs to <gbutils@googlegroups.com>
.PP
.br
Package home page <http://cafim.sssup.it/~giulio/software/gbutils/index.html>
.SH COPYRIGHT
Copyright \(co 2001\-2018 Giulio Bottazzi
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
(version 2) as published by the Free Software Foundation;
.PP
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.