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Before imputing a missing value, what is the most important thing to establish?

  1. A Why the value is missing, since missingness is often informative
  2. B Whether the column is numeric
  3. C The dataset's file format
  4. D The model type
Answer

Why the value is missing, since missingness is often informative

A blank cancellation date means the order was not cancelled, not that data is missing. Adding a was-missing flag often preserves useful signal.

All Machine Learning MCQs

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