Students explore correlation of data through an activity allowing them to order situations from negative correlation to positive correlation. Students make an initial prediction of order given just the written situation and make adjustments to the order as each component is introduced: data table and scatter plot, line of best fit, correlation coefficient. Discussion after each step allows students to explain how they change their predictions as they are given more information. At the end of the lesson, students are provided with a real life example of how correlation coefficient is used to determine strength of relationships among real data.

Students will learn how to use the Linear Regression feature of graphing calculators to find the true line of best fit and the correlation coefficient.

The lesson includes the guided card sorting task, a formative assessment, and a summative assessment.