30.4.3 - Model Evaluation
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Practice Questions
Test your understanding with targeted questions
What is accuracy in the context of model evaluation?
💡 Hint: Think about how many times the model is correct overall.
Define precision.
💡 Hint: It's about how trustworthy the positive predictions are.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the accuracy metric represent?
💡 Hint: Recall the formula for calculating accuracy.
True or False: A higher AUC value indicates that a model performs poorly.
💡 Hint: Think about what AUC measures.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given a confusion matrix:
Predicted Positive Predicted Negative Actual Positive 70 30 Actual Negative 10 90
Calculate accuracy, precision, recall, and F1-score.
💡 Hint: Use the formulas for these metrics based on the values from the matrix.
Discuss the limitations of using only accuracy as a performance metric with examples. Why is it important to consider precision, recall, and F1-score?
💡 Hint: Think about situations like medical diagnoses where false negatives can be life-threatening.
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