Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 2 - Summarizing and Graphing Data - Review - Review Exercises - Page 75: 5

Answer

Scatter Plot

Work Step by Step

The best graph for this data is a scatter plot. In order to create a scatter plot, create an x-y plane, graphing the year number on the x-axis. Starting at year 0, graph each point in the plane, and then draw the best-fit line (which is the line that seems to be the best at being close to all of the points.) Doing this, we see that there is a positive correlation, meaning that the amount of CO2 that the US is giving off is increasing.
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