---
title: Product Analytics Rule Categories
version: 1.0.0
---

# Rule Categories

## 1. A/B Test Evaluation (ab-test) — HIGH — 1 rule

Hypothesis formulation, sample size calculation, significance testing, and ship/extend/kill decision matrix.

- `ab-test-evaluation.md` — Full A/B test framework from hypothesis to ship decision

## 2. Cohort Retention (cohort) — HIGH — 1 rule

Cohort definitions, retention curve types, feature adoption tracking, engagement scoring, and SQL patterns.

- `cohort-retention.md` — Day-N retention, feature adoption cohorts, benchmark tables, SQL queries

## 3. Funnel Analysis (funnel) — HIGH — 1 rule

Funnel stage mapping, conversion rate calculation, drop-off prioritization, micro-conversions, and segmentation.

- `funnel-analysis.md` — Stage mapping, volume-weighted prioritization, segmented funnel patterns
