Marketing Mix Analyst, Fennimore AI skill by KissMySkills, cover

Marketing Mix Modeling Analyst AI Skill - Fennimore

$19
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Marketing Mix Analyst, Fennimore AI skill by KissMySkills, cover

Marketing Mix Modeling Analyst AI Skill - Fennimore

Design geo-holdout tests as ground-truth validation, read saturation curves for diminishing returns per channel, and reallocate budget on marginal ROI.

$19 this skill one payment yours forever

Claude skill package instant downloadfennimore-marketing-mix-modeling-incrementality-analyst.skill

Library plan

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  • Works inside Claude, Claude Code, Codex and Cursor, and in ChatGPT on Business, Enterprise and Edu, through one connector. ChatGPT Plus: use the file.
  • Every skill, prompt pack and agent, plus AI CRM and tools during the trial
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Library costs about the same for 2 months and includes every skill.

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How it works

Ask it something hard.

📎 fennimore-marketing-mix-modeling-incrementality-analyst.skillLOADED ✓
Our paid social claims 4x ROAS but revenue is flat - design a test that shows real incrementality.
CLAUDE · WITH THIS SKILL Fennimore returns: a geo-holdout test design with control markets → saturation curves showing diminishing returns per channel → a marginal ROI budget reallocation → a validation plan comparing model output to test results.

Or have every skill inside your AI.

0:16 · no sound
Get all 2,500+ with Library · $9/mo →

Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com

// the file itself

Read it before you buy it.

The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.

Use the name
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on

You are Fennimore, a Marketing Mix Modeling and Incrementality Analyst who builds MMM with adstock and saturation, designs geo-holdout tests, and reallocates budget on marginal ROI. You have been activated to say what a channel genuinely adds.

SKILL.md · 210 lines · instant download

// what's inside

What's inside this skill

  1. Geo-holdout test design with the control markets chosen
  2. Saturation curves showing diminishing returns per channel
  3. Budget reallocation based on marginal ROI, not blended ROAS
  4. Validation plan comparing model output against test results

Growth leads, CMOs and analysts whose reported ROAS no longer matches actual revenue.

// two ways to get it

Use it inside your AI, or download it once.

Library plan

This skill and 2,500+ others, inside your chat

$9/mo cancel anytime, or $59 a year

  • All 2,500+ skills, prompt packs and agents, loaded the moment you ask
  • Nothing to download or paste: connect once in Claude, ChatGPT, Claude Code or Cursor
  • New skills every week and 10 catalog files a month to download
Compare Library, AI CRM and Both
Buy once

Just this skill, as a file

$19 one payment

  • Download after checkout and paste it into any AI chat
  • One file, no updates, no connector
  • 30-day money-back guarantee

Already on Library or Both? This one is included, no need to buy the file.

// ask your assistant

Or let your AI set up this skill for you.

Go to kissmyskills.com/pages/connector and set up the "Marketing Mix Modeling Analyst AI Skill - Fennimore" skill (handle: fennimore-marketing-mix-modeling-incrementality-analyst) for me

Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →

What you're actually buying

Find out what would have happened to sales if a channel had never spent at all.

Fennimore is a Marketing Mix Modeling & Incrementality Analyst skill who answers the question multi-touch attribution structurally cannot. He builds regression-based MMM with adstock and saturation transformations, designs geo-holdout and PSA incrementality tests as the ground-truth validation layer, reads media saturation curves per channel to find the point of diminishing returns, optimizes budget on marginal (never average) ROI, and reconciles MMM against MTA/last-click explicitly when the two disagree, naming the mechanism causing the gap.

Who it's for

Growth and finance leaders who need to know a channel's true incremental ROI, especially offline, CTV, linear TV, and upper-funnel spend that leaves no clickstream to attribute.

Key capabilities

  • MMM channel decomposition reports with base vs. incremental sales and confidence ranges
  • Geo-holdout and PSA test designs with matched test/control regions and read-out methodology
  • Saturation curve charts marking the diminishing-returns inflection point per channel
  • Marginal ROI budget reallocation plans naming the specific channels scaled up and down
  • MMM-vs-MTA reconciliation memos stating which number to act on and why

How to use it

Paste Fennimore's SKILL.md into your Claude Project Instructions (or any AI system prompt), then describe your Fennimore problem. Works with Claude, ChatGPT, and any AI chat. Under 2 minutes to install.

// how to install Under 2 minutes

Four steps. Any AI chat.

  1. 01
    Download the file

    After checkout, the download link lands in your inbox. Save the .skill file: Claude takes it as it is.

  2. 02
    Open your AI chat

    Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.

  3. 03
    Add it to your AI

    Claude: Settings → Capabilities → Skills, upload the .skill file. ChatGPT, Gemini and others: open the .skill file like a .zip archive and paste SKILL.md into custom instructions or Project instructions.

  4. 04
    Start working

    Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required.

With Library there is nothing to download. Connect your AI once, then just ask: "Load Marketing Mix Modeling Analyst AI Skill from KissMySkills."

Setup guide → Library · $9/mo →

// faq

Questions about this product

What AI tools does this work with?+

Any AI chat that accepts a system prompt or project instructions - Claude, ChatGPT, Gemini, and others. Paste the SKILL.md content in and it works immediately.

How do I install it?+

Copy the SKILL.md file into your Claude Project Instructions (or paste it as a system prompt in any AI chat). No plugins, no setup, no account required. Takes under 2 minutes.

Is this a course or a tool?+

It's a tool, not a course. You're buying a single skill file that turns your AI chat into a senior Marketing Mix Modeling & Incrementality Analyst instantly. There's no video content or curriculum - you install it and start working your actual marketing mix modeling & incrementality analyst problems right away.

Our attribution tool and our MMM disagree on a channel's ROI - which one is right?+

Fennimore never averages or splits the difference. He states which method each number comes from, names the specific mechanism causing the disagreement (usually a lower-funnel channel absorbing credit for demand an upper-funnel channel actually created), and states the methodology limitation of each approach for that specific case before recommending which number to act on.

Ready to give your AI a specialist?

This one and 2,500+ others, inside Claude, ChatGPT, Claude Code, Codex or Cursor. Cancel anytime.