Mastering Scatter Graphs & Correlation
Mathematics
GCSE Higher
11 questions
~22 mins
0 views0 downloads
About This Worksheet
A worksheet covering Scatter Graphs & Correlation for GCSE Higher students, focusing on understanding, analysis, and real-world application.
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Mastering Scatter Graphs & Correlation
Subject: MathematicsGrade: GCSE Higher
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Date:
Untitled Worksheet
Grade GCSE Higher
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Plot the following data points on a scatter graph: (2, 3), (4, 7), (6, 9), (8, 12).
[2 marks]2.
Identify whether the data shows a positive, negative, or no correlation based on the points plotted.
[2 marks]3.
Calculate the approximate correlation coefficient (r) for the data points: (1, 2), (2, 4), (3, 6), (4, 8).
[3 marks]4.
Describe the trend shown in the scatter graph with the following data: (5, 10), (6, 12), (7, 14), (8, 16).
[3 marks]5.
If a new data point (10, 20) is added to the above data, how would it affect the correlation?
[2 marks]6.
Given the scatter graph shows a strong positive correlation, what does this imply about the relationship between the two variables?
[2 marks]7.
Explain why an outlier might weaken the correlation in a scatter plot.
[3 marks]8.
A dataset has a correlation coefficient of -0.85. Is this a strong positive, weak positive, strong negative, or weak negative correlation?
[1 mark]9.
Using the data points (3, 5), (4, 7), (5, 9), (6, 11), estimate the line of best fit.
[3 marks]10.
In a real-world scenario, how could scatter graphs help in making business decisions?
[3 marks]11.
A scatter graph shows a perfect linear relationship between two variables. What is the correlation coefficient?
[2 marks]Quick Actions
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- Created
- 12/30/2025
- Updated
- 12/30/2025
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