Short Answer

Why is the 100-example dev set inadequate in the source example?

Question: Answer in one to three sentences using the classifier accuracies and the stated limitation.

Sample answer: The dev set is inadequate because 100 examples cannot detect the 0.1 percentage-point difference between 90.0% and 90.1% accuracy. The author considers a 100-example dev set small compared with other machine learning problems observed.

Key points:

  • 100-example dev set
  • 90.0% versus 90.1% accuracy
  • The difference cannot be detected

Rubric: The answer should mention the 100-example size, the 0.1 percentage-point difference or both accuracies, and the inability to detect that difference.

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Updated 2026-07-19

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