None: Mixed Review
Mathematics
Year 9
11 questions
~22 mins
1 views0 downloads
About This Worksheet
A worksheet providing a mixed review on Scatter Graphs (Correlation) for Year 9 students, including procedural, reasoning, and application questions.
Worksheet Preview
Full preview • 11 questions
None: Mixed Review
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 (2, 4), (4, 8), and (6, 12) on the grid. Describe the general trend of these points.
[3 marks]2.
Calculate the correlation coefficient for the data points: (1, 3), (2, 5), (3, 7).
[4 marks]3.
A scatter graph shows no apparent trend between hours studied and test scores. What type of correlation is this?
[2 marks]4.
Construct a scatter graph showing a negative correlation with the points: (1, 10), (2, 7), (3, 4), (4, 1).
[4 marks]5.
Interpret the scatter graph: the points suggest a __________ correlation between age and number of hours spent on social media.
[2 marks]6.
A dataset shows a strong positive correlation. What does this imply about the relationship between the two variables?
[2 marks]7.
Using the data points (1, 2), (2, 4), (3, 6), (4, 8), determine the equation of the line of best fit.
[4 marks]8.
A student claims that there is no correlation between hours spent exercising and weight loss based on a scatter graph. What should you look for to verify this claim?
[3 marks]9.
The data shows a perfect negative correlation. What is the correlation coefficient?
[2 marks]10.
Identify and correct the error: The scatter graph shows a positive correlation, but the data points are plotted with some points far from the line of best fit, suggesting a weak correlation.
[3 marks]11.
Compare the correlation coefficients of two datasets: Dataset A with r=0.95 and Dataset B with r=0.2. Which dataset shows a stronger correlation?
[2 marks]Quick Actions
What is Remix?
Create a new worksheet based on this one. Change the grade level, topic, number of questions, or difficulty - then generate a fresh version.
- • Change grade level (Grade 6 → Grade 7)
- • Swap topics (Harry Potter → Macbeth)
- • Add more questions (10 → 15)
- • Adjust difficulty
Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet