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statistics-advisor SKILL.md skillA

This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.

statistics-advisor from khaledsaeed18/dotclaude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add khaledsaeed18/dotclaude/statistics-advisor@git:20260921.c8f5dc3

Pins git:20260921.c8f5dc3 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: khaledsaeed18/dotclaude
Path: skills/academic/statistics-advisor/SKILL.md
Versions recorded: 1
Latest version: git:20260921.c8f5dc3, committed Sep 21, 2026
Size: 6,636 bytes
Repository stars: 5
License: MIT

Plan and check the statistics for an empirical study: choose the test from the design and data type, check assumptions and pick the robust alternative, compute sample size from a target effect, report effect sizes and confidence intervals alongside p-values, handle multiple comparisons, and write the analysis paragraph in the form reviewers expect; with runnable Python (scipy, statsmodels, pingouin) or R snippets. Use before collecting data (the analysis plan), after collecting it…

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

Statistics answer one question: how much of what was observed could be chance, and how big is the effect if it is real. Everything here serves reporting both parts honestly. Decide the analysis before seeing the data, and report deviations from that plan.

## Step 1: describe the data before testing it

Always: n per group, mean and SD (or median and IQR for skewed data), min and max, missing values and why. Plot it (`research-figures`): a box plot with points or an ECDF per group shows more than any test. Check the shape (histogram, Q-Q plot) and the outliers, and decide how outliers are handled *by rule* (pre-specified), not by looking at which removal helps.

## Step 2: choose the test

| Comparison | Data | Parametric | Non-parametric / robust |
| --- | --- | --- | --- |
| two independent groups | continuous | Welch's t-test (default over Student's) | Mann-Whitney U; bootstrap CI of the difference |
| two paired measurements | continuous | paired t-test | Wilcoxon signed-rank |
| three or more groups | continuous | one-way ANOVA (Welch) then Games-Howell post hoc | Kruskal-Wallis then Dunn with Holm |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add khaledsaeed18/dotclaude/statistics-advisor@sha256:f456e4ab4c1a502d

The line at the top of this page pins the label git:20260921.c8f5dc3, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_2s5vaozbjqdq6kzi.svg)](https://markdownregistry.com/a/art_2s5vaozbjqdq6kzi)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 21, 2026.

version	committed	commit	size	audit
git:20260921.c8f5dc3 latest	2026-09-21	c8f5dc3	6,636 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (6636 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

khaledsaeed18/dotclaude · 5 stars · license MIT · pushed 2026-11-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2s5vaozbjqdq6kzi
GET https://markdownregistry.com/api/v1/resolve?ref=khaledsaeed18/dotclaude/statistics-advisor
GET https://markdownregistry.com/api/v1/blob/f456e4ab4c1a502d5b736867cdf591d62f3ed648df51ac9123b744adf47f1ffd

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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