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WAEC Data Processing 2018 Question 4

Question 4

Data and Information

The following are primary sources of information except

  1. A.questionnaire.
  2. B.publication.
  3. C.observation.
  4. D.interview.
Show the answer and explanation

Answer: B (publication.)

Explanation

Questionnaires, observation and interviews collect first-hand data; a publication is a secondary source.