Constructing & Analyzing Two-Way Table Page: _____________ Date: ______________

How do I construct and interpret a two-way table that summarize data on two categorical variables collected from the same subjects? Opening : Constructing & Analyzing Two-Way Table EQ

Opening : Constructing & Analyzing Two-Way Table SP.4 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. Standard

In this lesson you will learn how to construct a two way table by collecting and organizing data from a verbal description AND interpret frequencies. Opening : Constructing & Analyzing Two-Way Table

Let’s Review Core Lesson Cell PhoneNo Cell PhoneTotal MP3 Player No MP3 Player Total A survey of 8 th graders at a middle school found that 73 students own a cell phone and 60 of those students also own an MP3 player. There are 9 students that do not own a cell phone, but own an MP3 player. Eight students do not own either device Opening : Constructing & Analyzing Two-Way Table

Let’s Review Core Lesson A relative frequency is the percent or proportion of observations within a category of a data set. Opening : Constructing & Analyzing Two-Way Table

Let’s Review Core Lesson Cell Phone No Cell Phone Total MP3 Player No MP3 Player Total Opening : Constructing & Analyzing Two-Way Table Relative Frequency ROW

Let’s Review Core Lesson Cell Phone No Cell Phone Total MP3 Player No MP3 Player Total Opening : Constructing & Analyzing Two-Way Table Relative Frequency COLUMN

Let’s Review Quick Quiz 8 people have no dog. Of those 8, 2 have no cat either. There are 4 people with a cat and a dog, while 3 students have a dog and no cat. DogNo DogTotal Cat No Cat Total How many people were surveyed? Closing: Constructing & Analyzing Two-Way Table

Let’s Review Quick Quiz 25 students were surveyed. 14 students do not participate in sports and 7 do not take a foreign language. 6 student take foreign language and play sports. F.L.No F.L.Total Sport No Sport Total How many students take a foreign language and play no sports? Closing: Constructing & Analyzing Two-Way Table