Variables and Data

Name:

Date:

Students collecting data with charts and graphs

📊 Part 1: Understanding Variables

1. What is a variable? Circle the best answer.

Something that changes colour

An attribute or measurement of people or objects

A type of graph

A number that never changes

2. Look at these variables. Tick the boxes for the ones that are categorical (groups/categories):

Hair colour (brown, black, blonde)

Number of pets you have

Favourite fruit (apple, banana, orange)

Height in centimetres

Eye colour (blue, brown, green)

3. Circle the variables that are numerical (measured with numbers):

Number of siblings

Favourite sport

Age in years

Favourite colour

4. Write one example of a categorical variable from your own life:

A categorical variable I know is: _________________________________

5. Write one example of a numerical variable from your own life:

A numerical variable I know is: ___________________________________

📈 Part 2: Reading Graphs

6. Look at this bar graph showing favourite pets in Room 5. What are the three most important parts every graph needs? Write them below:

1. _________________________

2. _________________________

3. _________________________

7. If a bar graph shows that 8 students chose cats, 5 students chose dogs, and 3 students chose fish, which pet is most popular?

8. In a dot plot showing "Number of Books Read This Month", what does each dot represent?

One book

One student

One month

One library

✏️ Part 3: Data Collection Planning

9. You want to find out "What is the most popular lunch food in our class?" Write down how you would collect this data:

10. Complete this sentence about patterns in data:

When I look at a graph, a pattern I might notice is _______________________

________________________________________________________________

11. Think of a question you could investigate in your class. Write your question and say if the variable is categorical or numerical:

My investigative question: ________________________________________

________________________________________________________________

The variable is: categorical / numerical (circle one)

12. Extension Challenge: If you collected data about students' favourite colours and found that 12 chose blue, 8 chose red, 6 chose green, and 2 chose yellow, suggest one reason why blue might be the most popular:

Variables and Data

Variables and Data

📊 Part 1: Understanding Variables

📈 Part 2: Reading Graphs

✏️ Part 3: Data Collection Planning

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