Guide to Using the Humblytics Sample Size Calculator

Why Sample Size Matters

  Running a test with too few visitors leads to unreliable results. Too many visitors wastes time. The sample size calculator helps you find the sweet spot.

  

Using the Calculator

1. Enter your current conversion rate
2. Set the minimum detectable effect (MDE) you want to measure
3. Choose your statistical significance level (usually 95%)
4. Get your required sample size per variant

Understanding the Inputs

• Baseline Conversion Rate: Your current conversion rate before testing
• Minimum Detectable Effect: The smallest improvement you want to detect
• Statistical Significance: How confident you want to be in results

Planning Your Test Duration

  Divide the required sample size by your daily traffic to estimate how long your test needs to run.