May 6, 2009

Is Google Analytics reliable?

I have problems with Google Analytics. Looks like something is broken there.
I am checking a number of visitors on one site. I took yesterday (May 5, 2009) as a day to look at. The graph shows a different number of visitors for the same day depending on the start day of the graph! Have a look:




So I have 21325, 16914 and 5925 visitors for the same day. How is this possible? It seems to me that the number of visitors on May 5 can be only one number and it must not change if I change the starting date of the graph.
The same problem is with page views (another "absolute" metric) and visits.
Am I crazy or is this a error in Google Analytics?

7 comments:

  1. Hi!



    Must be a bug. Just checked my account with multiple sites and no error...

    ReplyDelete
  2. Hmmmm,



    same problem here :s



    thx

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  3. The bug doesn't seem to be occuring in dashboard view only in visitor overview-view :)

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  4. And it happens only for the previous day from today I think.

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  5. I've noticed similar errors in GA also. There are days when GA shows spikes in visitor numbers that are way off when compared to AWStats.

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  6. I noticed that May 5 now is ok but May 6 has the same problem. So it is definitely about the previous day from today. Stats of the previous day are not reliable.

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  7. It is known, that Google Analytics results "shake" a little every here and there and especially for the previous day (everything within the past 24 hours) . They should stabilize in the coming days. It also shows, that the one week view tends to be the most actual one against the longer period views.

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