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Display A/B testing - Ghost ads

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# 1
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We are planning to set up a display campaign targeting a remarketing audience of website visitors.


I would like to create a control group on this display ad. I saw this article mentioning Ghost ads as being the preferred approach:


How could I implement this measurement in GDN?




1 Expert replyverified_user

Re: Display A/B testing - Ghost ads

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# 2
Top Contributor

@Elisa M

I'm not sure I fully understood the statistical technique suggested in the article; Iwould advise to refrain from any statistical  technique that could bias the results of the test.

A classic A/B testing is based on randomly selected users in the test group and in the control group. This is how an A/B testing should be constructed.  Any attempt to modify the users on either group could bias the statistical analysis.

Also note  that a re-marketing list is already statistically biased, and I would be cautious. Those are users already visted your site the number of users (in the test group)  might not be big enough to get a reliable result.



Moshe, AdWords Top Contributor , Twitter | Linkedin | Community Profile | Ad-Globe
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