I'm testing Google Analytics' accuracy with my newly built website.

Only about 2 seconds after I visit my website, I see the number of "active users on site" increases (in Google Analytics' real-time reports). So the increase in number is quite accurate.

But when it comes to deducting leaving visitors, I find it quite inaccurate. After I leave my website, the number takes about 5 minutes to decrease.

Is that normal or I missed some steps when installing Google Analytics?

  • There is no way that GA can know you have left your site in real-time.
    – closetnoc
    Commented Aug 30, 2017 at 16:42
  • @closetnoc But why does it know that after about 5 minutes?
    – Ian Y.
    Commented Aug 30, 2017 at 16:44
  • No additional activity. It is an assumption.
    – closetnoc
    Commented Aug 30, 2017 at 16:44
  • It sounds like 5 minutes might be your average session duration. Commented Aug 30, 2017 at 16:55
  • 2
    GA has a help document where they define it: support.google.com/analytics/answer/1006253?hl=en Commented Aug 30, 2017 at 17:02


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