To check/find the version of numpy you are using:

[root@user] > python
Python 2.7.5 (default, Feb  8 2014, 08:16:49) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> print numpy.__version__
1.8.0
>>> numpy.version.version
'1.8.0'

Note that the first way can be used for other python modules. In single commande line:

[root@user] > python -c "import numpy; print numpy.__version__"
1.8.0