Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 3 - Statistics for Describing, Exploring, and Comparing Data - 3-2 Measures of Center - Page 90: 7

Answer

a) 430.1 hic is the mean b) 393.0 hic is the median c) There is not a mode d) 435.0 hic is the midrange The Hyundai Elantra is the safest car. No small cars do not appear to have about the same risk of head injury.

Work Step by Step

a) To find the mean add up all the numbers and divide it by the number of values there are. $\frac{371+356 +393 +544 +326 +520 +501}{7}$= 430.1 b) The middle value is 393 c) No numbers are repeated more than once. Therefore there is no mode. d) To find mid range add the maximum and minimum values and divide it by 2. $\frac{544+326}{2}= 435 This is the safest car because based on the data it is the car with the least amount of head injuries during a crash. Also because there is such a wide of the number of head injuries, you can tell that some cars are safer than others which means they don't have the same risk of head injury.
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.