In a normal distribution, approximately what percent of subjects lie within two standard deviations of the mean?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the Physical Therapy Evaluation Tool (PEAT) 5 Exam. Enhance your skills with interactive flashcards and multiple choice questions, each offering hints and explanations. Prepare effectively for your exam!

Multiple Choice

In a normal distribution, approximately what percent of subjects lie within two standard deviations of the mean?

Explanation:
This question banks on the empirical rule for a normal distribution. About 95% of observations lie within two standard deviations of the mean, with roughly 2.5% in each tail outside that range. That’s why two standard deviations captures most of the data around the mean. The 68% figure comes from within one standard deviation, and the 99.7% figure from within three standard deviations. The option representing 50% isn’t tied to this two-standard-deviation window.

This question banks on the empirical rule for a normal distribution. About 95% of observations lie within two standard deviations of the mean, with roughly 2.5% in each tail outside that range. That’s why two standard deviations captures most of the data around the mean. The 68% figure comes from within one standard deviation, and the 99.7% figure from within three standard deviations. The option representing 50% isn’t tied to this two-standard-deviation window.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy