Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 2 - Frequency Distributions and Graphs - 2-2 Histograms, Frequency Polygons and Ogives - Exercises 2-2 - Page 66: 3


The following figure shows the the grouped frequency distribution with 6 classes, the frequency histogram, the frequency polygon, and an ogive. From the distribution, we can see that it is right skewed and the cumulative frequency becomes flat towards higher numbers.

Work Step by Step

Data range: $254-3=251$ Bin width (6 classes): $\frac{251}{6}=41.8\approx42$ Start point: 2.5 (to avoid any data fall on the boundaries) Count the number of data point in each bin for the frequency as listed in the figure above.
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.