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4.6 Scatter Plots 10/20/2011 Algebra ½ Objectives: Interpret points on a scatter plot. Use lines of fit to make and evaluate predictions.

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Presentation on theme: "4.6 Scatter Plots 10/20/2011 Algebra ½ Objectives: Interpret points on a scatter plot. Use lines of fit to make and evaluate predictions."— Presentation transcript:

1 4.6 Scatter Plots 10/20/2011 Algebra ½ Objectives: Interpret points on a scatter plot. Use lines of fit to make and evaluate predictions

2 Vocab Scatter Plot: a graph that shows real world data; used to investigate a relationship (correlation) between two quantities Line of Best Fit: a line that best shows the “trend” of the data

3 Example: The table shows the largest vertical drops of nine roller coasters (y) in the United States and the number of years (x) after 1988 that they were opened. a.Draw a scatter plot, determine what type of relationship exist, and draw a line of fit. b.Write an equation for your line of fit in slope- intercept form. x 135812 1319 y 151155225230306300255 400

4 x 135812 1319 y 151155225230306300255 400

5 Assignment Scatter Plot Worksheet

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