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How Alpha and Beta Spell Improved A/B Testing

by Daniel Sims

alpha and beta in AB testing

Almost three thousand years ago, the ancient Greeks were already well on their way to developing such innovations as the catapult, indoor plumbing, and of course, the alphabet. What ultimately became the modern letters “A” and “B” actually originated as Alpha (α) and Beta (β) in the Greek alphabet. Today,…

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An Anti-Cookbook Approach to A/B Testing

by Today's Eggspert

magoosh ab testing

When I first started designing experiments to optimize conversion rates at Magoosh Test Prep (the company I work for), I read a bunch of case studies for inspiration, assembled a list of so-called “best practices” that I wanted to try, and naively thought that A/B testing wouldn’t involve any knowledge…

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The Heart Of Significance

by Daniel Sims

heart graph

Hopefully you had a wonderful Valentine’s day and enjoyed your time with a “significant” other. What makes them significant? Is it their personality, the way they make you feel, or simply the fact that your hypothesis testing revealed less than a 5% chance that your feelings for them could be…

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Show Me My Heatmap

Tools like @CrazyEgg & @mouseflow are a few user testing tools to make websites more awesome: hubs.ly/H01gDZZ0

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