Micro subject line statistical significance calculator

What it does

and you send them both to 1000 people. 1000 should go in the Sample column in both rows. Then let's say A gets opened by 220 people and B gets opened by 194. Those numbers go in the Affected column. ( See? ) You can also click Affected and change it to Opened , if that makes it clearer for you. ( See? ) This tool calculates statistical significance for little experiments. Just so you know... 89% or less could just be a fluke 90% is pretty good for a rough sense 95% is good enough for academic publishing 99% or higher is awesome ...but this is all assuming you set up the experimentfrom stats.theinfo.org

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