Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 2 - Summarizing and Graphing Data - 2-4 Graphs That Enlighten and Graphs That Deceive - Basic Skills and Concepts: 4

Answer

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Work Step by Step

When we have only a few data it is a simple random sample, but if we have a much larger sample then it is a voluntary response sample. In this case we have a lot more data, therefore it will look continuous, the distribution will be normal and we can draw conclusions from it.
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