Categorical Data (also called Qualitative Data) is a type of data that represents categories, labels, or groups rather than numerical values.
Example 1: Favorite Ice Cream Flavors
You conduct a survey in your school cafeteria to find out students' favorite ice cream flavors. You collect the following data:
Student | Favorite Flavor |
|---|---|
John | Chocolate |
Mary | Vanilla |
Peter | Mint Chocolate Chip |
Alice | Chocolate |
Bob | Strawberry |
Sarah | Strawberry |
Solution:
Data is categorical because "Favorite Flavor" has distinct categories like "chocolate," "strawberry," "vanilla," etc. You can analyze this data in various ways below is one such way:
Create a table showing the number of students who prefer each flavor.
Flavor | Frequency |
|---|---|
Chocolate | 2 |
Strawberry | 2 |
Vanilla | 1 |
Mint Chocolate Chip | 1 |
Example 2: Movie Genre Preferences
You ask your classmates about their favorite movie genres and get the following data:
Students | Favorite Genre |
|---|---|
David | Animation |
Emma | Sci-Fi |
Liam | Action |
Olivia | Drama |
Adam | Comedy |
Noah | Comedy |
Solution:
Data is categorical because "Favorite Genre" has distinct categories like Comedy, Drama, Action, etc.
Create a table showing the number of students who prefer each Genre.
Genre | Frequency |
|---|---|
Comedy | 2 |
Action | 1 |
Drama | 1 |
Sci-Fi | 1 |
Animation | 1 |
You can represent this both example in Pie chart as well as in Bar graph.
Example 3: Clothing Sizes
You ask a group of people their clothing size, and you get the following responses:
- Person 1: Medium
- Person 2: Large
- Person 3: Small
- Person 4: Medium
- Person 5: Large
Solution:
Create a frequency table:
Size | Frequency |
|---|---|
Small | 1 |
Medium | 2 |
Large | 2 |
Example 4: Color Preference Survey
You survey a group of people to find out their favorite colors:
- Person 1: Blue
- Person 2: Red
- Person 3: Green
- Person 4: Blue
- Person 5: Red
Solution:
Create a frequency table:
Color | Frequency |
|---|---|
Blue | 2 |
Red | 2 |
Green | 1 |
Example 5: Students’ Sports Participation
You collect data on sports participation in your school:
- Alex: Basketball, Soccer
- Ben: Baseball
- Emma: Volleyball
- Chloe: Tennis, Swimming
- David: Basketball, Track
Solution:
This data is categorical, and you can create a frequency table showing the number of students participating in each sport:
Sport | Frequency |
|---|---|
Basketball | 2 |
Soccer | 1 |
Baseball | 1 |
Volleyball | 1 |
Tennis | 1 |
Swimming | 1 |
Track | 1 |
Practice Questions
1: Sports Survey: Your school wants to improve its sports program and asks students which sports they participate in. You collect the following data:
Student | Sports |
|---|---|
Alex | Basketball, Soccer |
Ben | Baseball |
Emma | Volleyball |
Chloe | Tennis, Swimming |
David | Basketball, Track |
- Create a frequency table showing the number of students who participate in each sport.
- Draw a bar chart to visualize the popularity of different sports.
- If your school has budget limitations, which sports might be prioritized based on this data? Why?
2: You want to understand your classmates' lunch habits. You ask them about their preferred lunch options (packed lunch, school cafeteria, fast food) and their grade level. Examine the data and answer these questions:
- Are there any differences in lunch preferences between different grade levels? Explain your findings.
- If you were in charge of the school cafeteria, what changes might you make based on this data?
3: A teacher wants to know how students travel to school. The options are Bus, Car, Bike, Walk. Create a frequency table and visualize the data using a bar chart.
4: Survey the favorite social media platform (Facebook, Instagram, Twitter, LinkedIn) of 10 people. Create a frequency table and visualize the data using a pie chart.