Investigate patterns of association in bivariate data: Know that straight lines are widely used to model relationships between two quantitative variables. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.
Supports the following Standards of Mathematical Practice
• 1 Make sense of problems and persevere in solving them. • 2 Reason abstractly and quantitatively. • 3 Construct viable arguments and critique the reasoning of others. • 5 Use appropriate tools strategically. • 6 Attend to precision. • 7 Look for and make use of structure. • 8 Look for and express regularity in repeated reasoning.