Split Test Chi Squared Calculator 1.0

Split testing Adwords ads is running two ads that are identical except for one variation, or variable, that you are trying to test. This variable could be the headline, the word or sentence order, synonyms, capitalization or any difference you want to test. You run the ads for a period of time and then check which has the greater click through rate (CTR). Knowing when to stop your test and declare a winner is the tricky part, considering your baseline may have thousands of impression and your test case may only have a few hundred. The period of time required to allow your test to run can be a calculated by using the chi square test. Basically, this test checks your number of impressions and clicks to determine how statistically confident you can be that a pattern, and a clear winner have emerged. A confidence level of 95 percent is the accepted signficance to conclude which ad is the winner. If there is less that 95 percent, no conclusion can be made yet and the test must be allowed to have more time to accumulate impressions and clicks. Simply fill in the impressions and clicks for both ads in the textboxes. If the result is 95 percent or higher, you can stop the test and declare the ad with the higher CTR the winner. If under 95 percent, you must allow the test to continue running and you may try again when the impressions have increased.

Updated:	2011-05-29
License:	Free
Publisher:	adwords-marketing-tool.com
Size:	n/a
Require:
System:	Win95, Win98, WinME, WinXP, Win2000
Language:	English

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Split testing Adwords ads is running two ads that are identical except for one variation, or variable, that you are trying to test. This variable could be the headline, the word or sentence order, synonyms, capitalization or any difference you want to test. You run the ads for a period of time and then check which has the greater click through rate (CTR). Knowing when to stop your test and declare a winner is the tricky part.
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Split Test Chi Squared Calculator 1.0