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Average Time on Site 0:00

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I recently discovered why Google Analytics lists so many visitors with Average Time on Site 0:00.

Average Time on Site is calculated by subtracting time stamps between page views on your site. So if a visitor views one page and leaves (indicated by Bounce Rate 100%), there is no second page view to calculate the Average Time on Site. Google Analytics automatically assigns a time 0:00 for that visitor.

Some people have asked, “Why not just run a javascript timer on the site and ping the google analytics server every X interval?” The answer is because Javascript programs consume resources. Web analytic js scripts should not interfere with the operations of native web applications. (I am very suspicious of ClickTale because it records all user activity on a site. Do ClickTale operations interfere with the functionality DHTML rich web applications?)

**Reference: Bounce Rate and Time on Site – Google Forum Thread

Written by John Lai

April 5th, 2009 at 7:07 am

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One Response to 'Average Time on Site 0:00'

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  1. Interesting – thanks for sharing.

    Ace

    6 Dec 09 at 6:45 pm

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