Bias-Variance Tradeoff Interactive Simulator

High Bias / Low Variance

Underfitting (Simple Model)

High Bias / High Variance

Worst Case Scenario

Low Bias / Low Variance

The Ideal "Sweet Spot"

Low Bias / High Variance

Overfitting (Complex Model)

Model Complexity (Flexibility)

Low Complexity
(e.g., Linear) Optimal High Complexity
(e.g., Deep Tree)

Error Tradeoff Curve Matrix

Bias²

Variance

Total Error

Move the slider to start analyzing real-time variations!