Section 4: Representing Data

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Presentation transcript:

Section 4: Representing Data Graphs visually depict data, making it easier to see patterns and trends. K What I Know W What I Want to Find Out L What I Learned

Essential Questions Why are graphs created? How can graphs be interpreted? Copyright © McGraw-Hill Education Representing Data

Vocabulary Review New independent variable graph Representing Data Copyright © McGraw-Hill Education Representing Data

Graphing A graph is a visual display of data that makes trends easier to see than in a table. A circle graph, or pie chart, has wedges that visually represent percentages of a fixed whole. Copyright © McGraw-Hill Education Representing Data

Graphing Bar graphs are often used to show how a quantity varies across categories. Copyright © McGraw-Hill Education Representing Data

Graphing On line graphs, independent variables are plotted on the x-axis and dependent variables are plotted on the y-axis. Copyright © McGraw-Hill Education Representing Data

Graphing If a line through the points is straight, the relationship is linear and can be analyzed further by examining the slope. Copyright © McGraw-Hill Education Representing Data

Interpreting Graphs Interpolation is reading and estimating values falling between points on the graph. Extrapolation is estimating values outside the points by extending the line. This graph shows important ozone measurements and helps the viewer visualize a trend from two different time periods. Copyright © McGraw-Hill Education Representing Data

Add link to video from page 57 here. Tracking Crime Concepts in Motion FPO Add link to video from page 57 here. Copyright © McGraw-Hill Education Representing Data

Review Essential Questions Vocabulary Why are graphs created? How can graphs be interpreted? Vocabulary graph Copyright © McGraw-Hill Education Representing Data