Which metric would you use to evaluate a model's performance on imbalanced datas
Practice Questions
Q1
Which metric would you use to evaluate a model's performance on imbalanced datasets?
Accuracy
F1 Score
Mean Squared Error
R-squared
Questions & Step-by-Step Solutions
Which metric would you use to evaluate a model's performance on imbalanced datasets?
Step 1: Understand that imbalanced datasets have a significant difference in the number of examples for each class.
Step 2: Recognize that accuracy alone can be misleading in imbalanced datasets because a model can predict the majority class well but still perform poorly on the minority class.
Step 3: Learn about precision, which measures how many of the predicted positive cases were actually positive.
Step 4: Learn about recall, which measures how many of the actual positive cases were correctly predicted by the model.
Step 5: Understand that the F1 Score combines both precision and recall into one metric, making it useful for evaluating performance on imbalanced datasets.
Step 6: Conclude that using the F1 Score gives a better overall picture of model performance when dealing with imbalanced classes.
