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Class 9 Science Exploration: Entering the World of Secondary Science Nature and meaning of scienceHard

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In an experiment the person measuring outcomes knows which group received treatment. Which risk increases?

Answer and explanation

Correct answer: Observer bias

Prior knowledge may unintentionally influence measurement or interpretation. Blind testing can reduce this bias.

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Observer Bias Blind Testing Experiment Nature And Meaning Of Science Exploration: Entering The World Of Secondary Science Exploration Entering The World Of Secondary Science Science Class 9 Mcq

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