In this Grade 8 Illustrative Mathematics lesson from Chapter 6, students explore how organizing bivariate data into ordered tables and scatter plots makes patterns and associations easier to identify. Using real measurements such as triangle side lengths and perimeters, students practice sorting data, estimating unknown values based on observed trends, and matching data tables to their corresponding scatter plots by labeling axes.
Section 1
Organizing Paired Data
To investigate if one variable can predict another, we organize our observations into paired data. Each data point consists of a pair of values, , where is the value of the first variable and is the value of the second variable. This data is typically organized in a two-column table.
Section 2
Graphing Data to Find Trends
Graphing data involves plotting points on a coordinate plane to visualize the relationship between two variables. This visual representation often makes it easier to discern trends, such as increases, decreases, or other patterns, than looking at a table of data.
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Section 1
Organizing Paired Data
To investigate if one variable can predict another, we organize our observations into paired data. Each data point consists of a pair of values, , where is the value of the first variable and is the value of the second variable. This data is typically organized in a two-column table.
Section 2
Graphing Data to Find Trends
Graphing data involves plotting points on a coordinate plane to visualize the relationship between two variables. This visual representation often makes it easier to discern trends, such as increases, decreases, or other patterns, than looking at a table of data.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter