Chapter 2 Appendix - 8-31 for Blackboard

Chapter 2 Appendix - 8-31 for Blackboard - APPENDIX...

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APPENDIX Graphs’ purposes: Visually express ideas that might be less clear if described with equations or words Powerful way of finding and interpreting patterns Graphs of a single variable Pie chart Bar graph Time-series graph Graphing: a brief review 1
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Figure Types of graphs (a, b) A-1 2 (a) Pie Chart (b) Bar Graph The pie chart in panel (a) shows how U.S. national income is derived from various sources. The bar graph in panel (b) compares the average income in four countries.
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Figure Types of graphs (c) A-1 3 (c) Time-Series Graph The time-series graph in panel (c) shows the productivity of labor in U.S. businesses from 1950 to 2000.
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APPENDIX Graphs of two variables: the coordinate system Display two variables on a single graph Scatterplot Ordered pairs of points x-coordinate Horizontal location y-coordinate Vertical location Graphing: a brief review 4
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Figure Using the coordinate system A-2 5 Grade point average is measured on the vertical axis and study time on the horizontal axis. Albert E., Alfred E., and their classmates are represented by various points. We can see from the graph that students who study more tend to get higher grades.
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Chapter 2 Appendix - 8-31 for Blackboard - APPENDIX...

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