8.1 - Why Model Evaluation is Important
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Practice Questions
Test your understanding with targeted questions
What is 'accuracy' in model evaluation?
💡 Hint: Think about what it means to get something right in a total number.
Why might relying solely on accuracy be misleading?
💡 Hint: Consider a situation with many more of one class than another.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of model evaluation?
💡 Hint: Think about using a model beyond just the training environment.
True or False: Accuracy can always be trusted as the best metric for model performance.
💡 Hint: Consider situations with significantly more instances of one class.
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Challenge Problems
Push your limits with advanced challenges
You have built a model for predicting whether students will pass an exam with 90% accuracy. However, in your dataset, 98% of students pass. Interpret this accuracy and provide recommendations for better evaluation metrics.
💡 Hint: Consider how many actually fail versus how many are predicted to pass.
Design a scenario where high precision but low recall might be acceptable. Explain the reasoning.
💡 Hint: Think about the implications of misdiagnosis versus the cost of errors.
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