Label | Number of successes | Number of trials | |
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ButIsItStatisticallySignificant.com was made by @eoin using "ABBA", an excellent A/B (split test) Calculator by Thumbtack Engineering.

"Yes" is the answer if there is a p-value less than 0.05 for at least one variation. The lower the p-value, the more confident you can be that the given variation is actually different from the baseline. Alternatively, try User Effect's great Chi-Square calculator.

You can skip the form and entering your test data directly onto the end of the URL like this: #Baseline=10,100&Variation+1=40,100