ads-test

设计与评估付费媒体实验，包括假设、随机化、样本量与停机规则。

帮你把付费广告的实验从想法变成可执行的 A/B test：明确决策目标、因果假设、处理与对照、随机化单元、关键指标、样本量与停机规则。适合在想验证投放效果、需算统计显著性或决定是否扩大投放时使用。特色是会考虑平台限制、转化滞后、实验重叠和 guardrails，给出能直接落地的分析与决策规则。

# Paid Media Experiment

1. State the decision, causal hypothesis, treatment, control, randomization unit,
   population, primary metric, guardrails, minimum effect, and stopping rule.
2. Check platform constraints, overlapping experiments, conversion lag, seasonality,
   interference, and measurement quality.
3. Calculate sample and duration from declared assumptions; disclose approximations.
4. Change one decision surface unless the design explicitly estimates interactions.
5. Pre-register exclusions, quality checks, analysis, and decision thresholds.
6. For readout, verify assignment integrity and data completeness before estimating
   effect and uncertainty.
7. Return setup or readout in