Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 2 - Review - Case Study - The Day the Sky Roared - Page 126: 1

Answer

A bar graph and pie chart of the provided data of tornado intensities is constructed in Excel and is shown below:

Work Step by Step

A frequency bar graph is a graph where the frequency of each part of a sample is represented as bars. It shows comparisons between different types of data. The steps to create a frequency bar graph in Excel are as follows: Step 1: Enter the categories of tornado intensities in A column from A1 to A6 and frequency of each category, that is, the number of tornadoes, in B column from B1 to B6. Step 2: Select the data and go to Insert option in the menu bar. Step 3: Under the column title, select the appropriate column to represent the frequency bar graph. Step 4: A frequency bar graph is generated.Add horizontal axis title as “Tornado intensities” and the vertical axis as “Number of tornadoes”. A pie chart is a chart that represents different categories of a sample and each category defines the proportion of the whole. The steps to create a pie chart in Excel are as follows: Step 1: Enter the categories of tornado intensities in D column from D1 to D6 and frequency of each category in E column from E1 to E6. Step 2: Select the data and go to Insert option in the menu bar. Step 3: Under Pie title, select appropriate pie chart to represent the data. The frequency of F-3 tornado intensity is higher among all, that is, 24% from pie chart and near about 35 from bar graph.
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