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 67: 18

Answer

A frequency distribution, using 6 classes is shown in the table below. The figure below shows the histogram, frequency polygon, and an ogive for the data, using relative frequencies. The shape of the histogram can be described as nearly symmetric and slightly right skewed.
1565379522

Work Step by Step

Data Range: 57-12=45 Number of points: 40 Define class limits as shown in the table above. Counts in each of the 6 classes are listed in the table. Calculate the relative frequencies. Calculate the cumulative frequencies.
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