Lesson 2: 1.4 Categorical vs. Numerical Data

1
Lesson 21.4 Categorical vs. Numerical Data

• What is data? Categorize survey topics as
  categorical or numerical.

2
New Vocabulary

• Data- Information.
• Categorical Data- Information about categories.
• Numerical Data- Information about numbers.

3
1.4 Categorical vs. Numerical Data

• Categorical Data- Information about categories.
  
• Examples
• What is your favorite kind of soda?
• What kind of pets do you have?
• What is your favorite basketball team?

4
1.4 Categorical vs. Numerical Data

• Numerical Data- Information about numbers.
• Examples
• How many people like 7-Up?
• How many pets do you have?
• How many hours of TV do you watch in a week?

5
Homework Review

• Choose your favorite survey question from last
  nights homework. If you did not complete the
  homework, make up a survey question.
• Based on the definitions and examples in class,
  decide if your survey question will collect
  categorical or numerical data.

6
1.4 Categorical vs. Numerical Data

• We will share our survey ideas.
• Write a N for numerical on your whiteboard if
  you think we are collecting numerical data.
• Write a C for categorical if you think we are
  collecting categorical data.

7
Do Numerical and Categorical Graphs look
different?

• Lets make a line plot for two questions
• 1- About how many hours of TV do you watch each
  day?
• 2- What is your favorite kind of TV program?
  (Cartoon, Drama, Comedy, Sports, or Other)

8
Lets Make a Line Plot.
9
HW Catgorical/Numerical

• Categorize survey topics as categorical or
  numerical

10
Ticket to Quit It

• 1. What is on the bottom of a plot for numerical
  data?
• 2. What is on the bottom of a plot for
  categorical data?