sample-size-guide

Name: sample-size-guide
Author: alirezarezvani

Reference for calculating sample sizes and test duration.

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# Sample Size Guide

Reference for calculating sample sizes and test duration.

## Sample Size Fundamentals

### Required Inputs

1. **Baseline conversion rate**: Your current rate
2. **Minimum detectable effect (MDE)**: Smallest change worth detecting
3. **Statistical significance level**: Usually 95% (α = 0.05)
4. **Statistical power**: Usually 80% (β = 0.20)

### What These Mean

**Baseline conversion rate**: If your page converts at 5%, that's your baseline.

**MDE (Minimum Detectable Effect

How to Use

Recommended: Install to project (local)

mkdir -p .claude/skills
curl -o .claude/skills/sample-size-guide.md \
  https://raw.githubusercontent.com/alirezarezvani/claude-skills/main/marketing-skill/ab-test-setup/references/sample-size-guide.md

Skill is scoped to this project only. Add .claude/skills/ to your .gitignoreif you don't want to commit it.

Alternative: Clone full repo

git clone https://github.com/alirezarezvani/claude-skills

Then reference at marketing-skill/ab-test-setup/references/sample-size-guide.md