American Express Data Science Manager Interview Questions and Answers

Data manipulation and visualization using Pandas

Q1. Variance vs Bias tradeoff
Ans. 
Variance vs Bias tradeoff is a key concept in machine learning to balance model complexity and accuracy.
• Bias refers to error from overly simplistic models that fail to capture the true relationship between features and target variable.

• Variance refers to error from overly complex models that are too sensitive to noise in the training data.

• The goal is to find the right balance between bias and variance to minimize overal...read more
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