If the standard deviation of a data set is 0, what does this tell us?

A The data has high variability

B All data values are the same

C The mean is 0

D There is one data point

✓ Correct Answer: Option B

A standard deviation of 0 means there is no spread — all values are identical.

💡 Why is B) the correct answer?

The correct answer to the question "If the standard deviation of a data set is 0, what does this tell us?" is Option B: All data values are the same.

The other options — A) The data has high variability, C) The mean is 0, D) There is one data point — are incorrect for this SAT Exam Prep question. As explained above: A standard deviation of 0 means there is no spread — all values are identical.

📚 About This SAT Exam Prep Practice Question

This 1-level SAT Exam Prep question from the Math (Calculator) 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 SAT Exam Prep practice test or use flashcards for spaced repetition review.

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If the standard deviation of a data set is 0, what does this tell us?

✓ Correct Answer: Option B

📚 About This SAT Exam Prep Practice Question

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