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Practice multiple choice certification questions for Certified Data Science Practitioner - CDSP and review the explanation after each answer.

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Review the keyed rationale after answering so the correct CertNexus service choice and each distractor stay connected.

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Flashcard Practice Certified Data Science Practitioner - CDSP Multiple Choice

A company builds a churn model and joins customer records to future support outcomes that occurred after the prediction date. Validation accuracy becomes unusually high. What is the problem?

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The join leaks future information, so features must be joined using data available at prediction time The joined table should be sorted alphabetically before model training The target label should be removed because labels are not useful for supervised learning The join should use a larger compute cluster to process future records faster

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