How your earnings would change if you swapped a banner ad for a leaderboard?
Or if you changed your color palette to Open Air? Always wanted to know but don't know how to? A/B testing is what you've been looking for!
Firstly, you have to create two custom channels - one for each ad unit you're going to be testing.
To create a new custom channel name:
- Log in to your account at https://www.google.com/adsense
- From the links below the AdSense Setup tab, click Channels
- Choose the appropriate product sub-tab and scroll down to the Manage Custom Channels section
- In the 'Create new channel' field, enter a name that will help you to identify this channel later. For example, carpages or blue_skyscrapers
- Click Create new channel. Your new channel will be added to the Active Channels list.
To add the channel-specific code to your page:
- Click the AdSense Setup page and choose the appropriate product. After choosing your ad type, format, and colors, select the desired channel from the Channel drop-down list, then click Continue
- Copy-and-paste the ad layout code into your web pages. The channel identifier within your code will track performance on these pages.
Done? Ok, now we got channels. Then create a leaderboard ad unit and a banner ad unit with identical settings, except for the ad format. Be sure to assign each ad unit the appropriate channel created above.
Now you should decide how you want to run your A/B test; for example, you can choose to run the test on some % of your traffic or only on your home page. No matter what you choose, you'll need to run both of your ad units at the same time. But how can you easily alternate between your two ad formats? The simplest way to do this is to use the JavaScript template below - it will rotate between the two ad units, showing each 50% of the time.
var random_number = Math.random();
if (random_number < .5){ //your first ad unit code goes here } else {
//your second ad unit code goes here } </script>
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>
Also when using this template, remember to replace “//your first ad unit goes here” with your ad code inside the first set of tags.
Once you’ve implemented the A/B testing code on your page, you'll be able to view the experiment results in your channel reports and compare the figures from the custom channels you created.
A few important things to remember when designing and running an A/B test:
1. One of the ad configurations in your test should be the configuration you're currently displaying. In order to understand the effects of each ad configuration, you need to compare the experimental results to a baseline. This baseline, also called the control, should be the ad configuration you are currently using.
2. You should only make one change to the ad configuration in each A/B experiment. The goal of A/B testing is to isolate the revenue impact or CTR change of one particular modification, so that you know exactly which change affected your revenue. By modifying the baseline ad code in only one way, you can be assured of this.
3. For one A/B test, all configurations must be running simultaneously. Since we need to ensure that all ad configurations are subject to the same conditions such as the same traffic patterns, all configurations must be running at the same time. The JavaScript template above is one way of implementing this.
If you get some problems through test, you can visit A/B Help Center
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