Is the Overfitting & Honest Evaluation lesson free?

The interactive Overfitting & Honest Evaluation lesson is part of Pro (₹299/month). The first 5 lessons of the track are free — no account or card needed.

How long does the Overfitting & Honest Evaluation lesson take?

About 14 minutes end-to-end. It's a hands-on lesson — you read a paragraph, edit the code, and run it in the same tab.

Do I need to install Python to try the Overfitting & Honest Evaluation lesson?

No install required. PyRun runs real CPython in your browser via Pyodide (Python compiled to WebAssembly). Works on Chrome, Firefox, Safari, and Edge — desktop or mobile.

What level is the Overfitting & Honest Evaluation lesson?

Advanced level. Assumes comfort with classes, functions, and standard library. Not for first-time Python learners.

Overfitting & Honest Evaluation

Advanced
14 min
Machine Learning
machine-learning · sklearn · overfitting · evaluation
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Lesson 6 of 6

In this track

Your First Machine-Learning Model12 min
Train/Test Split: Don't Fool Yourself12 min
Regression: Predicting a Number14 min
Classification: Predicting a Category14 min
Decision Trees & Feature Importance13 min
Overfitting & Honest Evaluation14 min

Advanced · 12 minTrain/Test Split: Don't Fool YourselfWhy you must hold data back, and how to measure honest accuracy.Advanced · 13 minDecision Trees & Feature ImportanceTrain a tree you can read, and see which features actually matter.Advanced · 14 minClassification: Predicting a CategoryPredict yes/no outcomes with logistic regression and read accuracy.

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