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What is the main purpose of test data?

Answer and explanation

Correct answer: To evaluate the performance of a trained model

Test data are used after model training to estimate how well the trained model performs on previously unseen examples. They should not normally be used to train the model or repeatedly tune its hyperparameters, because doing so can make the evaluation less reliable. Therefore, option A is correct.

Related tags

Artificial IntelligenceClass 12Part B: Subject Specific SkillsUnit 2: Data Science MethodologyTest DataModel EvaluationMachine LearningHyperparameters

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