# Two-Way Tables

Videos and lessons to help Grade 8 students understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a two-way table. Construct and interpret a two-way table summarizing data on two categorical variables collected from the same subjects. Use relative frequencies calculated for rows or columns to describe possible association between the two variables.

For example, collect data from students in your class on whether or not they have a curfew on school nights and whether or not they have assigned chores at home. Is there evidence that those who have a curfew also tend to have chores?

Common Core: 8.SP.4

### Suggested Learning Targets

• I can recognize patterns shown in comparison of two sets of data.
• I can show how to construct a two-way table.
• I can interpret the data in the two-way table to recognize patterns. (For examples,
collect data from students in your class on whether or not they have a curfew on
school nights and whether or not they have assigned chores at home. Is there
evidence that those who have a curfew also tend to have chores?).
• I can use relative frequencies of the data to describe relationships (positive,
negative, or no correlation).

Related Topics:

Common Core for Mathematics

More Math Lessons for Grade 8

Understand, construct and interpret two-way tables--Lesson 1 of 3 (Common Core Standard 8.SP.4)
In this lesson you will learn how to identify bivariate categorical data by reading a two way table.

Understand, construct and interpret two-way tables--Lesson 2 of 3 (Common Core Standard 8.SP.4)
In this lesson you will learn how to construct a two way table by collecting and organizing data from a verbal description.

Understand, construct and interpret two-way tables--Lesson 3 of 3 (Common Core Standard 8.SP.4)
In this lesson you will learn how to construct a two way table by interpreting a Venn diagram.

8.SP.4 - Interpret Two-Way Tables.

Summarizing Bivariate Data.

Two-way Tables: Creating and Completing
How to create and complete two-way tables. Showing data in a two way table.