19-ab-test-setup-global SKILL.md skillA
19-ab-test-setup-global from minhnv0807/ai-business-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add minhnv0807/ai-business-skills/19-ab-test-setup-global@v1.0.1Pins v1.0.1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- minhnv0807/ai-business-skills
- Path
skills/en/19-ab-test-setup-global/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0.1, committed Aug 10, 2026
- First version recorded
- May 11, 2026
- Size
- 15,965 bytes
- Repository stars
- 644
- License
- MIT
Use when the user wants a VALID experiment instead of a guess — hypothesis, one variable, sample size and runtime math, statistical significance, primary versus secondary metrics, multi-arm designs, and a results template, across Optimizely, VWO, and native Meta and Google tests. Trigger on 'A/B test', 'split test', 'how long should I run the test', 'is this result significant', 'test two versions', 'which creative is actually better'. Also use when a winner was declared after two days on tiny…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# A/B Test Setup (Global) > Run experiments that produce decisions, not noise. Most "A/B tests" in marketing are underpowered, peeked-at, and badly hypothesized — meaning the team learns nothing and ships the louder variant. --- ## For Newbies A valid A/B test answers one question: "Did this change cause a real improvement, or am I seeing noise?" To answer it credibly you need four things: 1. A **specific hypothesis** with a numeric prediction 2. **One variable changed** (everything else identical) 3. **Enough sample** to detect the effect you care about 4. **Statistical significance** before you call a winner (typically p < 0.05) If any one of these is missing, you don't have an A/B test — you have a coin flip with extra steps. **Common newbie mistake:** running a test for 3 days, seeing variant B 40% higher, declaring victory, and shipping. Three days is too short to absorb day-of-week effects, and small samples produce wild swings. Variant B may revert (or reverse) by day 14. --- ## Step 0 — Read Context Read `.agents/product-marketing-context.md` if it exists. Audience size, average traffic, and current conversion rate determine whether a test is even feasible. --- …
Read the whole file at its exact version.
How to install
mdr add minhnv0807/ai-business-skills/19-ab-test-setup-global@sha256:62d28eece19bc51eThe line at the top of this page pins the label v1.0.1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_2h5xbqfunjunzbx2)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 11, 2026 and Aug 10, 2026, about one every 91 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.1 latest | 2026-08-10 | 764ea20 | 15,965 B | A | view · diff |
| v1.0.0 | 2026-05-11 | 2818264 | 15,685 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15965 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
minhnv0807/ai-business-skills · 644 stars · license MIT · pushed 2026-11-05 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_2h5xbqfunjunzbx2 GET https://markdownregistry.com/api/v1/resolve?ref=minhnv0807/ai-business-skills/19-ab-test-setup-global GET https://markdownregistry.com/api/v1/blob/62d28eece19bc51e9cf4d1ed5e713e39ffd588da0ad84385de553c650faf1467
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.