Unit 10 Lesson 7 Scatter Plots. Scatter Plot A scatter plot is a graph of a collection of ordered pairs (x,y). The graph looks like a bunch of dots, but.

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Presentation transcript:

Unit 10 Lesson 7 Scatter Plots

Scatter Plot A scatter plot is a graph of a collection of ordered pairs (x,y). The graph looks like a bunch of dots, but some of the graphs are a general shape or move in a general direction.

3 Scatter Plot The independent and dependent can be plotted on a graph called a scatter plot. By convention, the independent variable is plotted on the horizontal x-axis. The dependent variable is plotted on the vertical y-axis.

4 Example of Scatter Plot A scatter plot is a graph of the ordered pairs (x,y) of numbers consisting of the independent variables, x, and the dependent variables, y. Please use excel to create a scatter plot.use excel

5 Interpret a Scatter Plot The graph suggests a positive relationship between hours of studies and grades

Example 1: Graphing a Scatter Plot from Given Data The table shows the number of cookies in a jar from the time since they were baked. Graph a scatter plot using the given data. Use the table to make ordered pairs for the scatter plot. The x-value represents the time since the cookies were baked and the y-value represents the number of cookies left in the jar.

Example 1 Continued The table shows the number of cookies in a jar from the time since they were baked. Graph a scatter plot using the given data. Plot the ordered pairs.

Example 2 The table shows the number of points scored by a high school football team in the first four games of a season. Graph a scatter plot using the given data. Use the table to make ordered pairs for the scatter plot. The x-value represents the individual games and the y-value represents the points scored in each game. Plot the ordered pairs. Game1234 Score

An effective way to see a relationship in data is to display the information as a __________________. It shows how two variables relate to each other by showing how closely the data points _______ to a line. The following table presents information on tornado occurrences. Make a scatter plot for the table. Year # of Tornadoes scatter plot fit

Year # of Tornadoes Do you notice a trend?

Practice Pages #1-16