Re: Statistics with PostgreSQL

> Mean is just sum(col)/count(col)

You can also just use avg(col).

Either way, be careful because nulls may not be treated as you want for
such calculations.

The stats package R can access Postgres databases, and can be used for
robust statistical analyses of the data.

See:
http://sourceforge.net/projects/rdbi/


Cheers,

  Brent Wood