I asked a new client the other day what Web analytics metrics she'd been monitoring. She named gross page views, search engine referrals, top viewed pages, top exit pages... the usual suspects. Then, we did a simple comparison that yields a whole understanding of site performance.
We compared those last two metrics she named: top viewed pages and top exit pages. As they so often are, the top 20 viewed pages and the top 20 exit pages were almost identical. But raw numbers don't tell us enough.
What's instructive is to take one page and divide recorded exits by recorded views. I call that fraction the exit ratio, an instant read of the page's effectiveness at holding onto visitors.
Figuring an exit ratio is dead simple. If a page records 20,000 exits and 100,000 views, the exit ratio is 1:5, or 0.2.
I typically analyze all key site pages, or pages supporting a specific goal or task, to compare their exit ratios. The higher the exit ratio, the bigger a sieve that page is.
That's not always bad, of course. Some pages are natural exit routes. To see if your site leaks visitors in the wrong places, try classifying its pages this way:
How many of your high-exit-ratio pages fall into the second and third categories? A 0.7 exit ratio for a destination page may not be bad, but an action page with a 0.7 exit ratio warrants examination. If a page that exists only to move people deeper into a site or along a buy path is instead a major exit point, you know where to target improvements.
Some sites are far too large to permit analysis of exit ratios for every page. In these cases, I typically start by looking at a well-chosen subset of pages. These can include the top 100 or 200 most-viewed pages and key pages comprising a sequence of screens that enable desired visitor behavior or site goals.
Figuring page exit ratios is a quick, simple way to isolate pages that frustrate visitors and short-circuit the effectiveness of the whole site. Once targeted, you can craft improvements (design, layout, or language) and test them. Compare the new exit ratios with the initial ratio. As the page becomes healthier and visitors stop abandoning key paths in midstream, you'll see the number shrink.
If, like our client, you struggle trying to apply exit data from analytics tools, try calculating the exit ratios for a few important pages on your site. Tell me what you learn about your exit patterns. It's one of the fastest, simplest ways I know to turn raw data into usable information.
Jason Burby is the chief performance marketing officer for Possible Worldwide.
He's worked with Washington Mutual, Wachovia, T-Mobile, Converse, Alaska Airlines, Microsoft, Sprint, Levi Strauss, Qwest, and A&E Television Networks. Jason speaks frequently at conferences and seminars helping spread the word on the effective use of web analytics. In addition he is the co-chair of the Metrics/KPI committee of the Web Analytics Association. Together with Shane Atchison, Jason is co-author of "Actionable Web Analytics: Using Data to Make Smarter Business Decisions."

June 6, 2012
1:00pm ET / 10:00am PT
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