Unit 6, Lesson 10
Using Data Displays to Find Associations
Grade 8
Preparation
Lesson Narrative
In this lesson, students use two-way tables, bar graphs, and segmented bar graphs to decide whether or not there is evidence of an association in categorical data (MP4). At this level, students are looking for relative frequencies that appear very different between categories.
- Create a two-way table and a segmented bar graph that represent relative frequencies, and interpret (orally) the frequencies in context.
- Determine (in writing) whether categorical data has a positive, negative, or no association using a relative frequency table or segmented bar graph, and justify (orally) the reasoning.
Let’s use data displays to find associations.
Required Materials
Activity 3
Required Preparation
Use the data from the previous lesson’s Cool-down to build a two-way table of students’ responses. Provide access to materials for students to create their own segmented bar graphs including colored pencils and straightedges.