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Level 25 of 27 · AI Workbench

Find the segments

Level 25 of 27 in the AI Workbench: a free AI exercise at Intermediate level, which takes about 25 minutes. Group 900 customers with k-means, scale the columns, choose k with a stated check, show two seeds agree, then name each group and give it an action.

25 minIntermediateNot started

Goal

Group 900 customers with k-means, scale the columns, choose k with a stated check, show two seeds agree.

Done when

The acceptance test marks the skills this level practises.

  • K-means
  • Scaling
  • Choosing k
  • Stability
  • Customer segments

Skills

  • K-means
  • Scaling
  • Choosing k
  • Stability
  • Customer segments

Before you start

Level 24, Forecast the demand, comes first. Do it first if the ideas are new to you.

Start Find the segmentsSee all 27 levels

Free, in your browser, nothing to install. Your work is saved on this device. Updated 15 Nov 2026.

27 levels

Levels in the AI Workbench

Prepare data, train a model and check the AI's work against a brief.

Start with data

Levels 1 to 2
  1. Start Data health check
  2. Start The downtime report: clean the export, answer in SQL

Train and test a model

Levels 3 to 6
  1. Start Train and evaluate without leakage
  2. Start Choose the metric and the threshold
  3. Start Overfitting: tune the tree
  4. Start Feature work and the model bake-off

Vision

Levels 7 to 8
  1. Start Vision inspection on the conveyor
  2. Start Teach a vision model on real-looking parts

Language and agents

Levels 9 to 15
  1. Start Prompt to spec
  2. Start Answers with sources
  3. Start Build an evaluation set
  4. Start Evaluate the retriever
  5. Start Cost, speed and quality
  6. Start A safe agent
  7. Start Test an agent and try to break it

Responsible AI

Levels 16 to 18
  1. Start Fairness check
  2. Start Privacy first
  3. Start Risk score: calibration and subgroups

Check an AI's writing

Levels 19 to 21
  1. Start Check the AI's work: finance
  2. Start Check the AI's work: HR
  3. Start Check the AI's work: marketing

Build a model, then check the note

Levels 22 to 23
  1. Start No-show model and a safe AI note
  2. Start Delay-risk model and a schedule check

Forecast and group

Levels 24 to 25
  1. Start Forecast the demand
  2. Start Find the segments

Run it and review it

Levels 26 to 27
  1. Start Monitor it and spot the drift
  2. Start Go or no-go review
Previous level 24Forecast the demandNext level 26Monitor it and spot the drift
About the AI Workbench

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