An email-spam classifier has 10% training error and 11% development error, but the team wants to reach 3% error. What should they do first?

True or False: When a model has high training error because it does not fit the training set well, collecting more training examples is usually the main fix.

Effect of More Training Examples

Your model’s training error is 18%, and your goal is 6%. What should you address first?

More Data Quickly Solves Underfitting

More training data mainly helps with _____ issues, not with bias.

Match each learning situation to the most appropriate bias-or-variance description.

Order the steps for diagnosing and responding to a model that performs poorly on the training set.

A model has 18% training error, 19% development error, and the target error is 6%. What does this most strongly suggest?

True or False: If training error is still high, adding more data usually leads to big gains on the development and test sets.

If training error remains large, improve the _____ fit before expecting validation or test performance to rise.

Match each error pattern to the correct diagnosis and recommended action.

Prioritize the next improvement step when considering more training data.

Why More Training Data Does Not Fix a Large Training Error

Diagnosing a speech command classifier with high training and dev error

What Should Improve First Before Validation Results Are Expected to Move?