📖 Step 1: Planning & Product#25 / 291

A/B Test

A/B Test

📖One-line summary

An experiment that compares two versions to pick the better one.

Example

A/B test comparing two versions

A version

Conversion: 2.1%

B version

Conversion: 3.8%

Vibe coding prompt examples

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Design an A/B test for the CTA button on the landing page. Organize the hypothesis, variables, sample size, and success criteria.

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Write code to analyze A/B test results. Include statistical significance testing and confidence interval calculation.

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Implement A/B testing in Next.js using middleware. Split users 50:50 to show different pages.

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