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A claim is supported by a very large sample but the instrument measures the wrong concept. What is the main problem?

Answer and explanation

Correct answer: Low measurement validity

The direct answer is B: low measurement validity. Measurement validity asks whether an instrument actually measures the concept it is supposed to measure. A very large sample improves the amount of data and may support generalisation, but it cannot repair a basic mistake in what was measured. The reasoning is: the study collects many observations; the instrument consistently records the wrong concept; therefore the claim is not a valid measure of the intended idea. Option A, low external validity, concerns whether findings generalise to other people, places, or situations. A large sample may even help external validity, but that is not the stated problem. Option B is correct because the instrument lacks correspondence with the intended construct. Option C, high precision, would mean closely clustered or finely measured readings; even precise readings can be precisely wrong and do not solve invalid measurement. Option D, high reproducibility, means others can repeat the procedure and obtain similar results; repeatability also cannot make the wrong concept the right one. Exam cue: ask first, “Did we measure the right thing?”

Related tags

Measurement ValidityLarge SampleScientific StudyNature And Meaning Of ScienceExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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