🛠️ A-B test sample size sheet

💡 Use Case

My own spreadsheet for one question: how many dispatchers per group before a difference of the size I care about could show up. Made for 📌 Design the triage A-B test, the first test I sized myself, from the approximation in 📐 Sample size for comparing two proportions.

⚖️ Pros & Cons

Pros

• four yellow cells (baseline, smallest difference worth having, significance, power) and one answer. Bao Nguyen checked it against his own and they agreed to the unit.

Cons

• the assumptions are spread over three tabs and I changed one without noticing. That is why it became a script two weeks later.

🔄 Alternatives

• Bao. He is faster, but then I would not know where the number comes from.