Machine learning (ML) enables businesses to harness large datasets to develop models that drive predictions and decisions, but evaluating model performance is crucial for maintaining quality. Evaluation metrics, such as the F1 score, play a key role in determining the effectiveness of these models, particularly in classification tasks. The F1 score, which balances precision and recall, is essential in scenarios with imbalanced datasets where both false positives and false negatives have significant consequences, such as in medical diagnostics and fraud detection. However, the F1 score has limitations, such as not accounting for class imbalance and varying based on context, which can influence its interpretation. To address these challenges, alternatives like the F2 score and F-beta score offer different emphasis on precision versus recall. Encord Active is a platform that aids ML practitioners by providing tools to visualize evaluation metrics, identify errors, and compare models, thereby enhancing model development and ensuring effective performance measurement.