Scatter Graphs (Correlation): Fluency & Practice
Mathematics
Year 9
12 questions
~24 mins
1 views0 downloads
About This Worksheet
A worksheet focusing on developing procedural mastery and understanding of scatter graphs and correlation concepts.
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Scatter Graphs (Correlation): Fluency & Practice
Subject: MathematicsGrade: Year 9
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Untitled Worksheet
Grade Year 9
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Plot the points (1, 2), (2, 4), and (3, 6) on the grid. Describe the type of correlation shown.
[3 marks]2.
Plot the points (1, 5), (2, 3), and (3, 1). What kind of relationship does this suggest?
[3 marks]3.
Plot the points (1, 2), (2, 2), (3, 2), (4, 2). What does this indicate about the correlation?
[3 marks]4.
On the same grid, plot the points (1, 1), (2, 4), and (3, 9). Describe the pattern of the data.
[3 marks]5.
Construct a scatter plot with a moderate positive correlation using the points (1, 2), (2, 3), (3, 4), (4, 5).
[4 marks]6.
Calculate the correlation coefficient (r) if the data points are (1,2), (2,3), (3,4), (4,5).
[4 marks]7.
Explain why a scatter graph with points widely spread out with no clear pattern indicates weak or no correlation.
[4 marks]8.
A dataset shows a strong negative correlation. If the x-values increase, what happens to the y-values?
[2 marks]9.
Identify the mistake: A student claims that points (1, 2), (2, 4), (3, 8) show no correlation because they are not in a straight line.
[4 marks]10.
Plot the points (2, 1), (4, 2), (6, 3), (8, 4) and determine the strength of the correlation.
[3 marks]11.
A scatter plot shows a random pattern of points with no apparent trend. What is the likely value of the correlation coefficient?
[3 marks]12.
Challenge: Given the data points (1, 2), (2, 4), (3, 6), (4, 8), and (5, 10), draw the scatter graph and describe the correlation.
[4 marks]Quick Actions
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Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet