psignifit software package provides Fitting and testing hypotheses about psychometric functions, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install psignifit
psignifit is installed in your system.
Make ensure the psignifit package were installed using the commands given below,
$ sudo dpkg-query -l | grep psignifit *
You will get with psignifit package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Mathematics |
| Package | psignifit |
| Version | 2.5.6-3ubuntu1 |
| Description | Fitting and testing hypotheses about psychometric functions |
| Sub Section | math |