ttest - T-tests

       CMTK  is  developed  with support from the NIAAA under Grant AA021697, National Consortium on Alcohol and
       Neurodevelopment in Adolescence (N-CANDA): Data Integration Component. From April 2009 through  September
       2011, CMTK development and maintenance was supported by the NIBIB under Grant EB008381.

CMTK 3.3.1p2                                       Feb 26 2025                                          ttest(1)

       Torsten Rohlfing, with contributions from Michael P. Hasak, Greg Jefferis, Calvin R.  Maurer,  Daniel  B.
       Russakoff, and Yaroslav Halchenko

       Report bugs at http://nitrc.org/projects/cmtk/

       Pixelwise tests of statistical significance. Also compute correlations and z-scores

http://www.fsf.org/licensing/licenses/gpl.html

       ttest - T-tests

GlobalToolkitOptions(thesearesharedbyallCMTKtools)--help
            Write list of basic command line options to standard output.

       --help-all
            Write complete list of basic and advanced command line options to standard output.

       --wiki
            Write list of command line options to standard output in MediaWiki markup.

       --man
            Write man page source in 'nroff' markup to standard output.

       --version
            Write toolkit version to standard output.

       --echo
            Write the current command line to standard output.

       --verbose-level<integer>
            Set verbosity level.

       --verbose, -v
            Increment verbosity level by 1 (deprecated; supported for backward compatibility).

       --threads<integer>
            Set maximum number of parallel threads (for POSIX threads and OpenMP).

   MainOptions--log, -l
            Use log data for testing

       --abs, -a
            Use absolute data for testing

       --abs-out, -A
            Generate absolute (unsigned) data

       --invert, -i
            Invert data, i.e., subtract from 1.0

       --short, -s
            Convert probabilities to short (and scale by 1000)

       --paired, -p
            Compute paired t-test [default: groupwise]

       --cross-correlation, -c
            Compute paired cross-correlation

       --zscores, -Z
            Compute z-scores of test (y) distribution averages

       --text, -t
            Text file input and output rather than image files.

       --mask<string>, -m<string>
            Mask file name [Default:NONE]--outfile<string>, -o<string>
            Output file name [Default:ttest.nii]--tstats-file<string>
            T-statistics output file name (for correlation: p-value output file) [Default:NONE]

       ttest  [options]  imageX0  [imageX1  ...]  --  imageY0 [imageY1] ...  ttest [options] --symmetric imageX0
       [imageX1 ...]