by James DeLapa | May 22, 2026 | Blog, CRO
How to Calculate Minimum Detectable Effect in Google Sheets Key Takeaways Minimum Detectable Effect (MDE) defines the smallest improvement you want to detect with confidence in an A/B test. Aligning on MDE before launch helps teams avoid premature conclusions and...
by James DeLapa | May 15, 2026 | Blog, CRO
How to Calculate Confidence Intervals in Google Sheets Why Confidence Intervals Are Worth Paying Attention To Calculating confidence intervals is a critical practice, especially when your decisions hinge on the accuracy of your estimates. Whether you are measuring...
by James DeLapa | May 8, 2026 | Blog, CRO
How to Calculate Test Duration in Google Sheets Why Test Duration Should Never Be a Guess One of the most common mistakes in CRO is ending a test too early. If your test does not run long enough to reach the required sample size, your results will not be statistically...
by James DeLapa | May 1, 2026 | Blog, CRO
How to Calculate Expected Lift Range in Google Sheets Why Expected Lift Range Matters Before you launch a test, it helps to know what kind of performance improvement you are actually hoping to detect. That is where expected lift range comes in. It gives you a...
by James DeLapa | Apr 24, 2026 | Blog, CRO
How to Calculate Minimum Sample Size using Google Sheets Introduction to Sample Size Calculation Sample size calculation is the foundation of any reliable survey research or market research project. Before you send out a single survey or run an A/B test, you need to...
by James DeLapa | Apr 17, 2026 | Blog, CRO
How to Run Meaningful CRO Tests What Is Conversion Rate Optimization? In a world of fast tools and faster decisions, most people misunderstand what conversion rate optimization (CRO) actually is. It is not just running A/B tests or changing button colors… but if...
