experiment-design SKILL.md skillA
experiment-design from vandanaajaydubey111/great-pm is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vandanaajaydubey111/great-pm/experiment-design@git:20260721.86de099Pins git:20260721.86de099 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vandanaajaydubey111/great-pm
- Path
skills/experiment-design/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260721.86de099, committed Jul 21, 2026
- Size
- 4,881 bytes
- Repository stars
- 3
- License
- MIT
Playbook for trustworthy experiments — hypothesis framing, test types, sample size and power, statistical vs practical significance, stopping rules, and the traps (peeking, multiple comparisons, novelty effects). Used by experiment-designer.
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
# Experiment Design — playbook Experiments produce useful answers only when they are honestly designed. Underpowered tests produce noise; peeking produces false positives; guardrail-blind tests produce shipped regressions. ## 1. Hypothesis — one sentence with a mechanism `If we do <change>, <primary metric> will move by <effect size> because <mechanism>.` - The metric is real and pre-defined (it is in the metrics plan). - The effect size is the MDE — the minimum effect that would matter for the business. Smaller MDE = bigger sample required. - The mechanism is why this should work. If you cannot articulate the mechanism, the result will not generalise. ## 2. Test types — pick by what you can randomize - **A/B test** — randomize users into control vs treatment. Default for feature changes. - **Multivariate** — multiple variants at once (A/B/C/D). Beware: inflates multiple-comparison risk; correct alpha or use one decision metric. - **Holdout** — keep a slice of users in pure control long-term, even after launch. Useful for measuring cumulative effect. - **Switchback** — for marketplace / two-sided contexts where user-level …
Read the whole file at its exact version.
How to install
mdr add vandanaajaydubey111/great-pm/experiment-design@sha256:dc28a680a2b564f5The line at the top of this page pins the label git:20260721.86de099, 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_3lmu2cguanjqbcak)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 21, 2026.
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 (4881 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
vandanaajaydubey111/great-pm · 3 stars · license MIT · pushed 2026-09-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3lmu2cguanjqbcak GET https://markdownregistry.com/api/v1/resolve?ref=vandanaajaydubey111/great-pm/experiment-design GET https://markdownregistry.com/api/v1/blob/dc28a680a2b564f53b2d84deaf7e47e406b4d365fc17cd8c2a354cb0201550f7
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.
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