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PSM · Biostatistics
Sample itemWhat does statistical power represent?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Ability to detect a true effect
The defining Biostatistics principle supports Ability to detect a true effect; it directly accounts for the forensic observation, evidence requirement, or public-health measure in the question.
Option by option
A. Median value
Median value is not consistent with the finding or appropriate action described.
B. Study prevalence
Study prevalence may be useful elsewhere but is not the best answer here.
C. Probability of type I error only
Probability of type I error only does not establish the requested biostatistics conclusion.
D. Ability to detect a true effect (correct)
Correct. Ability to detect a true effect best fits the important clue in this sample.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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