gretl software package provides GNU Regression, Econometric & Time-Series Library, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gretl
gretl is installed in your system.
Make ensure the gretl package were installed using the commands given below,
$ sudo dpkg-query -l | grep gretl *
You will get with gretl package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Mathematics |
| Package | gretl |
| Version | 1.9.9-1 |
| Description | GNU Regression, Econometric & Time-Series Library |
| Sub Section | math |