Using figures from HP, I get about 3.4. Interestingly though, if I deduct the 25 worst hubs (out of about 100) it jumps to 4.6. Nearly half of my hubs are almost total non-performers. It's too bad they are the ones I enjoy writing the most!
Carrying it a little further, my worst 10 hubs got 35 views over 30 days, while the best 10 got 4500. What a difference! 13,000%, and that was in December, when my best performers (home improvement stuff) was way down!