Applied & Decision Scientist Claude Skill

Name: Yannis - Decision Scientist AI Skill
Brand: KissMySkills
Price: 29.0 USD
Availability: InStock

Yannis - Decision Scientist AI Skill

$29.00

$29.00 $43.99

Yannis - Decision Scientist AI Skill

$29.00 this skill vs $43.99 hiring a senior applied / decision scientist

Complete skill package instant downloadyannis-applied-decision-scientist.skill

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Buy once $29 This one skill as a file. Yours forever, works in any AI chat. All-Access whole library $8.25/mo billed yearly All 1,000+ skills in the marketplace. Your AI picks the right one and loads it by itself. Claude, ChatGPT, Claude Code, Cursor · or $19 month to month

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⚡ Instant download ∞ Keep forever ✎ Written by us

Add it once. Your AI works like a specialist.

Add it to Claude, ChatGPT or Gemini - your AI works as a specialist in this field.

Instant download · 30-day money-back guarantee. Pay once, keep forever - no subscription. Written and tested by us, never scraped from GitHub. Refund policy

Ask Yannis something hard.

📎 yannis-applied-decision-scientist.md LOADED ✓

We raised prices 8% in one region, revenue there grew 5%. Boss says the hike worked. Nobody randomized anything. Did it work?

CLAUDE · AS YANNIS, DECISION SCIENTIST Unknowable from that comparison - a region growing 5% after a hike proves nothing without a counterfactual; the other regions might have grown 9%. Name the decision criterion first: what number rolls the hike out, what number rolls it back? Then difference-in-differences: that region's trend against matched controls, with parallel trends checked on 12 pre-months - if trends diverged before the hike, the design is dead and we move to synthetic control. And elasticity hides in volume, not revenue: +5% revenue on +8% price means units fell about 3%. Send monthly revenue and units by region and I'll run the DiD properly.

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You don't read it. Your AI does.

Add the skill file to Claude, ChatGPT or Gemini once. From then on it works as a specialist in this field and answers as Yannis from the very next message.

Buy once and the file is yours to keep forever. Or subscribe to All-Access and let the KissMySkills connector load it, and every other skill, into your chat on request.

// what's inside

What's inside this skill

The decision criterion stated before any analysis
A causal design for observational, unrandomized data
The estimate with its assumptions and threats named
A recommendation carrying explicit confidence bounds

Product and growth leads measuring a rollout that never had a control group

A senior applied / decision scientist bills $145+/hr, the complete skill is yours forever.

// what's inside

What you're actually buying

Senior Applied / Decision Scientist who names the decision criterion before running any causal analysis on data nobody randomized.

Yannis covers causal inference on observational data (propensity score matching, difference-in-differences, instrumental variables, regression discontinuity), turning a vague "should we do X" question into a measurable analytical question with a clear decision criterion, and optimization or simulation for resource allocation decisions.

Who it's for

Analytics and strategy teams who need a defensible causal estimate from historical data, plus a stress-tested allocation plan, not a naive before/after comparison dressed up as proof.

Key capabilities

Fuzzy business asks translated into a measurable question with a stated outcome and decision criterion
Identification strategy (PSM, diff-in-diff, IV, RDD) chosen from how the treatment group actually came to be treated
Identifying assumptions tested explicitly: covariate balance, parallel pre-trends, instrument relevance, cutoff manipulation
Effect estimates delivered with an honest confidence range and a named list of remaining confounders
Resource-allocation optimization or simulation stress-tested against the uncertainty in the underlying estimate

How to use it

Paste Yannis's SKILL.md into your Claude Project Instructions (or any AI system prompt), then describe your Applied & Decision Scientist 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.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.

No technical knowledge required. No subscription. Pay once, keep forever.

// compatible with

Works with every major AI chat.

Drop the file into your AI's system prompt, Project instructions, or custom instructions. No setup. No code. No vendor lock-in.

// faq

Questions about this product

What AI tools does this work with?+

Claude, ChatGPT, or any AI chat that accepts a system prompt or project instructions. Claude Projects gives the best results.

How do I install it?+

Paste the SKILL.md content into your Claude Project Instructions or your AI's system prompt. Under 2 minutes, no setup required.

Is this a course or a tool?+

It's a skill file, not a course. One file that turns your AI into a configured Applied & Decision Scientist ready to work on your Applied & Decision Scientist problem immediately.

Leadership wants to know if our loyalty program actually increased spend, but we never randomized enrollment, what does Yannis do?+

He never accepts a naive before/after or enrolled-vs-not comparison as a causal answer. He first asks how customers actually came to enroll, since that determines whether propensity score matching, difference-in-differences, or an instrumental variable is the valid method, then tests the identifying assumption explicitly before reporting an effect.

Do I have to read it myself?+

No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.

Is this a physical book?+

No, it's digital. You download it the moment the order goes through and it's yours permanently. The cover is styled like a book because each edition is written and edited as one self-contained piece of work. The reading part is your AI's job, not yours.