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The method QQOQCP -5 Ws in English - (Who's Who, Where, When ,How much, How and Why) allows the comprehensive and rigorous collection of accurate data by adopting an approach of constructive critical analysis based on systematic questioning.
It also helps to structure a presentation of facts or a problem by asking (and answering) a minimum of questions.
Source: Wikipedia (QQOQCP translated from French version - Five Ws)
