Check averages of rates Skill (SKILL.md)
- conversion and return rates by store or campaign
- error rates by team or service
- margins by product
- What does this skill do?
- Checks whether a report averages group rates or divides totals, shows the gap between both and recommends the number that fits the question.
- What do you put in?
- The document as text or PDF.
- What do you get?
- both numbers
- cause of the gap
- recommended label
- Works in
- Claude, ChatGPT, Gemini, Microsoft 365 Copilot, Cursor and other assistants
Skill instructions
This is how the AI works with this skill. Copy it or add it to your assistant as a file.
- Read numerator and denominator per group.
- Compute the overall rate.
- Compute the average of group rates.
- Explain the gap.
- Recommend a number and label.
View full text
--- name: ratio-avg-check description: "Reads numerators and denominators per group. Useful before a rate is used for targets or board reports." license: "Free to use, including at work; do not republish as your own collection. AI Compare Ninja terms of use." --- # Check averages of rates For every rate you ask: is this the typical group or the whole volume? ## Steps 1. Read numerator and denominator per group. 2. Compute the overall rate. 3. Compute the average of group rates. 4. Explain the gap. 5. Recommend a number and label. ## Output - both numbers - cause of the gap - recommended label ## Rules - Uses aggregates only. - Changes no source data. - Do not invent facts, figures, names, dates or commitments. If something is missing, write [missing: …] or ask. - Reply in the user's language unless asked otherwise. - Repeat only as much personal data as the task requires. - You deliver a draft. The decision and any sending stay with the human. Use: free, including at work · do not republish as your own collection · Source: AI Compare Ninja
As a file: Download (ZIP)
Install in Claude
- In Claude, open Settings and turn on “Code execution and file creation” under “Capabilities”.
- Go to “Customize” › “Skills”.
- Click “+”, then “Create skill” and “Upload a skill”.
- Choose the downloaded ZIP file. The skill appears in your list, where you can switch it on and off.
The ZIP file contains the folder “ratio-avg-check” with the file SKILL.md, exactly as Claude expects it. Do not unzip it; upload it as is.
Claude Code: unzip the file into ~/.claude/skills/ (for you) or .claude/skills/ in your project.
Steps per Anthropic's help pages, as of October 2026. Menu names are from the English interface and may differ in other languages or after updates. On Team and Enterprise accounts an admin must allow skills. Sources: https://support.claude.com/en/articles/12512180-use-skills-in-claude · https://claude.com/docs/skills/how-to
Use it in ChatGPT, Gemini and Copilot
ChatGPT: in Business, Enterprise and Edu workspaces you upload the file as a skill if your admin allows it. Gemini app: skills can be uploaded as SKILL.md or ZIP. Microsoft 365 Copilot: upload it as your own skill in Cowork. Codex, GitHub Copilot and Cursor read skills from the project folder .agents/skills/. Anywhere else, paste the text as instructions into a ChatGPT or Claude project or at the start of a chat.
According to the vendors' help pages, October 2026. Availability depends on plan, admin settings, age and region. Sources: https://help.openai.com/en/articles/20001066-skills-in-chatgpt · https://support.google.com/gemini/answer/17094296 · https://learn.microsoft.com/en-us/microsoft-365/copilot/cowork/cowork-customize · https://developers.openai.com/codex/skills · https://code.visualstudio.com/docs/copilot/customization/agent-skills · https://cursor.com/docs/context/skills
Use, safety and notes
Text only, reviewed by us. This skill contains no scripts, no links and no calls to other services. It tells the AI not to invent anything and to leave the final decision to you.
AI results can be wrong or incomplete. Check them before you use or send them. Not legal, tax, financial or medical advice. No warranty.
Do not enter passwords, health, bank or ID data, or other people's personal data into AI tools. Whatever you enter is processed by the provider under its own terms.
You may use and adapt our skills freely, including at work. Please do not republish them as your own collection. We give no warranty for AI results; check them yourself. Terms of use