[jiggy2011]

What is a good way to determine when your sample size is big enough to to warrant A/B testing?

[itsbanderson]

Here's a sample size calculator tool: http://www.cardinalpath.com/tools/sample-size-calculator-too...

And here's a post that addresses this issue: http://37signals.com/svn/posts/3004-ab-testing-tech-note-det...

[harlanlewis]

https://www.google.com/webhp?ie=UTF-8#hl=en&output=searc...