How do I collect sample data from population? 7.7 Choose the Best Model for 2-Var Data Example 1 Use a linear model Teachers’ Salaries The table shows.

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Presentation transcript:

How do I collect sample data from population?

7.7 Choose the Best Model for 2-Var Data Example 1 Use a linear model Teachers’ Salaries The table shows the teacher’s salary y (in dollars) for a certain school district, where x is the number of years of teaching experience. Use a graphing calculator to find a model for the data. 1.Make a scatter plot. The points lie approximately on a _____. This suggests a _________ model. 2.Use the _______ regression feature to find an equation of the model. y x30,62432,43634,16735,98937,68439,31141,098 3.Graph the model along with the data to verify that the model fits the data well. A model for the data is y = __________________.

7.7 Choose the Best Model for 2-Var Data Checkpoint. Complete the following exercises. 1.Use a graphing calculator to find a model for the data. Then graph the model and the data in the same coordinate plane. y x

7.7 Choose the Best Model for 2-Var Data Example 2 Use a quadratic model Roller Coaster Riders A manager at a local amusement park kept a record of the number of people who ride the most popular roller coaster at the park. The table shows the number of people y who rode the roller coaster x hours after the park had opened. Use a graphing calculator to find a model for the data. 1.Make a scatter plot. The points form an _________ ___________. This suggests a __________ model. y X Use the ___________ regression feature to find an equation of the model.

7.7 Choose the Best Model for 2-Var Data Example 2 Use a quadratic model Roller Coaster Riders A manager at a local amusement park kept a record of the number of people who ride the most popular roller coaster at the park. The table shows the number of people y who rode the roller coaster x hours after the park had opened. Use a graphing calculator to find a model for the data. y X Graph the model along with the data to verify that the model fits the data well. A model for the data is y = _________________________.

7.7 Choose the Best Model for 2-Var Data Checkpoint. Complete the following exercises. 2.Use a graphing calculator to find a model for the data. Then graph the model and the data in the same coordinate plane. y x

7.7 Choose the Best Model for 2-Var Data Pg. 289, 7.7 #1-6