Biostatistics: practice question

A PSM question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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PSM · Biostatistics

Sample item

What measure expresses spread around a mean in the same units as the data?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

C. Standard deviation

This Biostatistics item is answered by Standard deviation, which directly follows the principle relevant to the observation, documentation, or public-health action described.

Option by option

  • A. Mode

    Mode may be associated with another setting but is not the best fit here.

  • B. Median

    Median does not explain the stated finding or appropriate intervention.

  • C. Standard deviation (correct)

    Correct. Standard deviation most directly matches the defining clue in this item.

  • D. Variance

    Variance does not establish the requested biostatistics conclusion.

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.

More PSM questions

Questions about this PSM question

What is the answer to this PSM question?

The best answer is C, Standard deviation. This Biostatistics item is answered by Standard deviation, which directly follows the principle relevant to the observation, documentation, or public-health action described.

Why is "Mode" not the answer?

Mode may be associated with another setting but is not the best fit here.

Why is "Median" not the answer?

Median does not explain the stated finding or appropriate intervention.

Why is "Variance" not the answer?

Variance does not establish the requested biostatistics conclusion.

What concept does this question test?

It tests Biostatistics in PSM. The correct option holds because: Correct. Standard deviation most directly matches the defining clue in this item.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Biostatistics?

Practise biostatistics with small calculations until sensitivity, predictive values and risk measures are automatic. Then use the flashcards and the other PSM questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.