What is bias-variance tradeoff in Random Forest?

Updated May 17, 2026

Short answer

Random Forest reduces variance while maintaining low bias.

Deep explanation

Individual trees have high variance, but averaging many trees reduces variance significantly without increasing bias much.

Real-world example

Used in predictive analytics for customer churn.

Common mistakes

  • Assuming both bias and variance are eliminated.

Follow-up questions

  • What increases bias?
  • What increases variance?

More Random Forest interview questions

View all →