[SOLVED] Which of the following statements is true concerning data selection?

Which of the following statements is true concerning data selection?

  1. A data selection strategy is required by federal law.
  2. A good data selection strategy can eliminate the need for data collection.
  3. A data selection strategy must be established after the data are collected.
  4. Establishing a data selection strategy prior to collecting data decreases the chance of a biased outcome.

Answer:

Establishing a data selection strategy prior to collecting data decreases the chance of a biased outcome.

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