If a variable has a standard deviation of 0, what can you conclude?

A The data is widely spread

B All values in the dataset are identical

C The mean is 0

D The data is normally distributed

✓ Correct Answer: Option B

A standard deviation of 0 means there is no variation — all data points have the same value.

💡 Why is B) the correct answer?

The correct answer to the question "If a variable has a standard deviation of 0, what can you conclude?" is Option B: All values in the dataset are identical.

The other options — A) The data is widely spread, C) The mean is 0, D) The data is normally distributed — are incorrect for this GMAT Exam Prep question. As explained above: A standard deviation of 0 means there is no variation — all data points have the same value.

📚 About This GMAT Exam Prep Practice Question

This 1-level GMAT Exam Prep question from the Data Insights topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GMAT Exam Prep practice test or use flashcards for spaced repetition review.

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If a variable has a standard deviation of 0, what can you conclude?

✓ Correct Answer: Option B

📚 About This GMAT Exam Prep Practice Question

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