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: 17


The following figure shows the histogram, frequency polygon, and ogive for the data, using relative frequencies. The shape of the histogram is non-symmetric and right skewed.

Work Step by Step

Data Range: 270-80=190 Total data points: 46 Bin width (7 classes): $190/7=27.1$ use 28 Start point (bin1): 79.5 to avoid any data fall on the boundaries Count the frequency in each bin Calculate relative frequency Calculate cumulative frequency.
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