This is a general basis that online players using Poker Tracker or Hold'em Manager can use ...

The first number is the VPIP (voluntarily put in pot) and second number is PFR (pre flop raise).

General styles of play
Tight Aggressive = 24/20 - 22/18 - 16/14

Loose Aggressive = 30/25 - 50/20 - 94/60

Loose Passive = 44/5

Loose Tight = 25/10

Nit = 11/8 - 19/3