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A student rewrote the aim after the experiment when the expected trend was absent. Why is this practice scientifically weak?

Answer and explanation

Correct answer: It creates bias by changing the question to fit the result

Changing the aim after seeing results weakens objective experimental planning. In exams keep the original question separate from later interpretation.

Related tags

Post-Hoc-BiasAimExperimental-PlanningIntegrityHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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