# 14. Identify possible associations for two-way tables of categorical data (FP)

teaches Common Core State Standards CCSS.Math.Content.8.SP.A.4 http://corestandards.org/Math/Content/8/SP/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Lesson objective: Identify possible associations in two-way tables for categorical data.

This lesson helps to build procedural skill with identifying possible associations in categorical data. A two-way table is used here because it highlights possible associations. This work develops students' understanding that examining frequencies in two-way tables and other displays of categorical data gives information about associations.

Students engage in Mathematical Practice 3 (Construct viable arguments and critique the reasoning of others) as they decide which students' statements about possible associations are accurate based on the data in two-way tables.

Key vocabulary:

• association
• categorical data
• relative frequency
• two-way table

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