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 is the arithmetic average of observations?

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

The answer and the reasoning

D. Mean

The mean is calculated by summing all observed values and dividing by the number of observations, making it sensitive to extreme values.

Option by option

  • A. Range

    Range is the difference between highest and lowest values.

  • B. Median

    Median is the middle ordered value.

  • C. Mode

    Mode is the most frequent value.

  • D. Mean (correct)

    Correct: mean is the arithmetic average.

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 D, Mean. The mean is calculated by summing all observed values and dividing by the number of observations, making it sensitive to extreme values.

Why is "Range" not the answer?

Range is the difference between highest and lowest values.

Why is "Median" not the answer?

Median is the middle ordered value.

Why is "Mode" not the answer?

Mode is the most frequent value.

What concept does this question test?

It tests Biostatistics in PSM. The correct option holds because: Correct: mean is the arithmetic average.

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.