If you're looking at your site statistics via Google Analytics, you'll notice in addition to page views, another common segmentation of your stats are "visits" and "visitors". This is very useful when trying to understand your customers and their loyalty to your business and website. Google defines them as,

Visits represent the number of individual sessions initiated by all the visitors to your site. If a user is inactive on your site for 30 minutes or more, any future activity will be attributed to a new session. Users that leave your site and return within 30 minutes will be counted as part of the original session.

The initial session by a user during any given date range is considered to be an additional visit and an additional visitor. Any future sessions from the same user during the selected time period are counted as additional visits, but not as additional visitors.

The statistic "Pages/Visit" is the simple mathematical calculation of your total number of pages viewed divided by the number of visits or sessions. If your number here is under 2, then most people are either a) finding the information they need on your landing page - typically your home page, b) they are frustrated by your site and don't click around to another page, or c) found your site by accident via inappropriate keywords and didn't want to see your site at all. If your number is higher, then your site visitors are staying on your site, enticed by the home page to click to another page or more to get the information they need.

The statistic "% New Visits" gives you a good idea of how often your customers are returning to your site within the given timeframe (by default one month). A high percentage here means a lot of new people are coming to your site each month, whereas a low number would indicate your existing customers are returning to your website repeatedly.

Depending on the size of your site and your goals, you'll need to interpret these numbers to decide if your site is effective. This is one of the services I offer my clients, as well as periodically evaluating what we may need to change on your site to make it more effective.