Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 3 - Statistics for Describing, Exploring, and Comparing Data - 3-3 Measures of Variation - Basic Skills and Concepts: 40

Answer

9.84 years, seems to be good.

Work Step by Step

By using the values from the picture and the given formula: $s=\sqrt {\frac{n\cdot[\sum(f\cdot x^2)]-[\sum (f\cdot x)^2]}{n\cdot(n-1)}}=\sqrt {\frac{33\cdot 10552-496^2}{33\cdot 32}}=9.84 \ years.$ This value is lower than 2 and more than 2 other data from other exercises, so seems to be good.
Small 1513327539
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.