IQR = Q3 - Q1: Mixed Review
Mathematics
Grade 7
12 questions
~24 mins
1 views0 downloads
About This Worksheet
A worksheet covering the calculation and understanding of the Interquartile Range (IQR = Q3 - Q1), including procedural questions, problem-solving, and real-world applications.
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IQR = Q3 - Q1: Mixed Review
Subject: MathematicsGrade: Grade 7
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Untitled Worksheet
Grade Grade 7
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Find Q1 and Q3 for the data set: 3, 7, 8, 5, 12, 10, 6, 9.
[3 marks]2.
Calculate the IQR for the data set: 15, 22, 13, 19, 17, 21, 16.
[2 marks]3.
The ages of students in a class are: 12, 14, 13, 15, 16, 14, 13, 12. Find the IQR.
[2 marks]4.
Plot the graph of y=2x for x values 0 to 5 on the grid.
[2 marks]5.
Construct a box plot for the data set: 4, 8, 6, 10, 12, 7, 9.
[3 marks]6.
In a survey, students rated their satisfaction from 1 to 10. The ratings are: 3, 7, 8, 5, 9, 6, 8, 7. Find the IQR.
[2 marks]7.
A data set has Q1=20 and Q3=40. What is the IQR?
[1 mark]8.
Identify and correct the mistake: The data set is 2, 4, 7, 9, and the calculated Q1=2, Q3=9, IQR=7.
[3 marks]9.
A school tracks the number of books read by students in a month: 2, 5, 7, 4, 6, 8, 3. Find the IQR.
[2 marks]10.
Given Q1=12 and Q3=30 from a data set, what is the IQR? Explain the significance of this measure in understanding data spread.
[4 marks]11.
Calculate Q1, Q3, and the IQR for the data set: 10, 12, 14, 16, 18, 20, 22.
[3 marks]12.
Explain a common mistake students might make when calculating the IQR and how to avoid it.
[3 marks]Quick Actions
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Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet