Unit Quiz: Data & Graphs
Instructions
This quiz tests everything you learned about data and graphs. Answer all questions to see how well you've mastered these skills.
Questions
1. What does a bar graph use to show data?
A) Lines connecting points
B) Bars of different heights or lengths
C) Pie slices
D) Pictures only
Answer
B) - Bar graphs use bars of different heights or lengths to represent data values.
2. In a pictograph, each star symbol equals 5 votes. If there are 6 stars, how many votes is that?
A) 6 votes
B) 11 votes
C) 25 votes
D) 30 votes
Answer
D) 30 votes - 6 stars x 5 votes each = 30 votes.
3. What must every graph have to explain what it's about?
A) Colors
B) A title
C) Pictures
D) Numbers only
Answer
B) A title - Every graph needs a title to tell readers what data is being shown.
4. A bar graph shows: Soccer: 15, Basketball: 10, Baseball: 12. Which sport is most popular?
A) Basketball
B) Baseball
C) Soccer
D) They're all equal
Answer
C) Soccer - Soccer has 15 votes, which is the highest number.
5. What is the purpose of a key in a pictograph?
A) To lock the graph
B) To show what each symbol represents
C) To add color
D) To make the graph bigger
Answer
B) - The key tells readers how much each symbol represents.
6. Use this data: Red: 8, Blue: 12, Green: 6, Yellow: 4. How many more chose blue than yellow?
A) 4 more
B) 6 more
C) 8 more
D) 16 more
Answer
C) 8 more - 12 - 4 = 8 more chose blue.
7. A graph's y-axis counts by 2s. A bar reaches the 5th line. What value does it show?
A) 5
B) 7
C) 10
D) 25
Answer
C) 10 - Counting by 2s: 2, 4, 6, 8, 10. The 5th line is 10.
8. What labels does a bar graph need?
A) Title only
B) Title, x-axis label, and y-axis label
C) Just numbers
D) No labels needed
Answer
B) - A complete bar graph has a title and labels for both axes.
9. Data shows: Mon: 3, Tue: 5, Wed: 4, Thu: 2, Fri: 6. What is the total for the week?
A) 15
B) 18
C) 20
D) 22
Answer
C) 20 - 3 + 5 + 4 + 2 + 6 = 20.
10. Half of a symbol in a pictograph where each symbol = 10 represents:
A) 0
B) 5
C) 10
D) 20
Answer
B) 5 - Half of 10 = 5.
How Did You Do?
- 9-10 correct: Excellent! You've mastered data and graphs!
- 7-8 correct: Good job! Review the questions you missed.
- 5-6 correct: Keep practicing! Review the lessons in this unit.
- Below 5: Go back and review all the lessons before moving on.
Next Steps
- Review any concepts you found challenging
- Practice reading graphs in books, newspapers, and online
- Create your own surveys and graphs
- Continue to the next Math unit: Measurement Conversions