cbrock84/headcount · plugins/data-analytics/skills/quantitative-analysis/SKILL.md

quantitative-analysis skillA

quantitative-analysis is agent-read markdown (skill) from cbrock84/headcount: Answers a business question with data without fooling yourself — framing the question so an answer would change something, choosing the right comparison, checking the data before trusting it, recognizing the traps that produce confident wrong answers (aggregation reversals, survivorship, regression to the mean, multiple comparisons), and reporting uncertainty honestly. Use this to run an analysis, review one before acting on it, or work out why two people looking at the same data reached opposit.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add cbrock84/headcount/quantitative-analysis@git:20260901.3f04dfc
Exact content
mdr add cbrock84/headcount/quantitative-analysis@sha256:a95b1f686c47ca88

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_x5yh63umoowhuqop.svg)](https://markdownregistry.com/a/art_x5yh63umoowhuqop)

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Versions

versioncommittedcommitsizeaudit
git:20260901.3f04dfc latest2026-09-01 3f04dfc 4,690 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4690 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

GitHub

cbrock84/headcount · 1,590 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_x5yh63umoowhuqop
GET https://markdownregistry.com/api/v1/resolve?ref=cbrock84/headcount/quantitative-analysis
GET https://markdownregistry.com/api/v1/blob/a95b1f686c47ca8856a0169d2bc60e85154d8adca6adc507672e7980e17c5093

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.