Practical A/B testing frameworks, behavioral science, and conversion optimization — for growth leaders responsible for revenue.
Understanding the mean, variance, and sampling is foundational for making sound A/B testing decisions. This guide explains these statistical concepts through practical experimentation examples without requiring advanced math.
Early peeking at A/B test results inflates false positive rates and leads to costly decisions based on noise. Learn why premature analysis destroys experiment validity and how sequential testing offers a legitimate alternative.
Understand when running concurrent A/B tests is safe and when it introduces risk. Learn how interaction effects work, how to assess risk, and how to balance test velocity with result accuracy.
Learn why dashboard metrics alone can mislead your A/B test analysis. Discover how to verify results across multiple data sources, interpret inconclusive outcomes, and avoid premature winner declarations.
Discover how to uncover segment-level insights hidden within overall A/B test results. Learn which segments to analyze, minimum sample size requirements, and how to avoid the data dredging trap.
Understand the tradeoffs between client-side and server-side A/B testing architectures. Learn when each approach is appropriate, how to handle flicker effects, and when a hybrid model makes sense.
Inconclusive A/B test results are not failures. Learn how to extract learning from flat tests, distinguish between wrong hypotheses and weak implementations, and decide when to iterate versus move on.
Transform your A/B testing program from isolated experiments into a compounding knowledge system. Learn structured archiving approaches that drive long-term growth and build a culture of experimentation.
Move beyond gut-feel prioritization with structured frameworks for ranking A/B test hypotheses. Learn scoring systems, the five-bucket approach, and how to balance opportunity against implementation ease.
Discover the external validity threats that can invalidate your A/B test results, from seasonality and sample pollution to the flicker effect, and how to mitigate them.
Learn what statistical power means for A/B testing, why 80% is the standard, and how underpowered tests lead to costly false negatives that cause you to miss winning changes.
Master A/B test sample size calculation including the relationship between baseline conversion rate, minimum detectable effect, and statistical power to design reliable experiments.
Understand what p-values really mean in A/B testing, why common interpretations are wrong, and how to use statistical significance correctly for business decisions.
Understand the difference between one-tailed and two-tailed hypothesis tests in A/B testing, when each is appropriate, and the simple conversion rule between them.
A practical guide to the Bayesian vs Frequentist debate in A/B testing, why it matters less than you think, and what practitioners should actually focus on when choosing a statistical approach.
Learn the science behind A/B test duration, why stopping at significance is dangerous, and how to determine the right test length using sample size calculations and business cycle analysis.
Learn how to interpret confidence intervals and margin of error in A/B test results, why your conversion rate is always an estimate with uncertainty, and how this affects decisions.
User testing reveals the gap between how you designed your product and how people actually experience it. Learn the think-aloud protocol, setup best practices, and how to turn observations into winning experiments.
A strong hypothesis is the difference between an experiment that teaches you something and one that wastes traffic. Learn the three-part structure, common pitfalls, and how to connect hypotheses to your research findings.
Heat maps and session replays are seductive but easy to misinterpret. Learn how to use click maps, scroll maps, and form analytics to generate real insights instead of pretty pictures.
Technical bugs and performance issues silently destroy conversion rates. Learn why cross-browser testing, site speed analysis, and QA are the most profitable and most overlooked areas of optimization.
Most A/B tests fail because they skip the research phase. Learn how conversion research — from heuristic analysis to qualitative methods — builds the foundation for experiments that actually win.
Quantitative data tells you what is happening on your website. Qualitative research tells you why. Learn how surveys, interviews, and customer feedback generate the insights that drive winning experiments.
Learn the five-dimension heuristic evaluation framework — relevancy, clarity, value, friction, and distraction — and how to score pages systematically for conversion optimization.
Practical A/B testing frameworks, behavioral science, and CRO strategies for growth leaders responsible for revenue. Practical. Free. Weekly.
Free · No spam · Unsubscribe anytime