Which of the following is NOT an example of feature selection?

Which of the following is NOT an example of feature selection?

  •  Removing a feature with a lot of missing values.
  •  Replacing a missing value with the variable mean.
  •  Adding an in-state feature based on an applicant’s home state.
  •  Re-formatting an address field into separate street address, city, state, and zip code fields.

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