Positive: Mixed Review
Mathematics
Grade 8
11 questions
~22 mins
1 views0 downloads
About This Worksheet
A worksheet focusing on positive correlation in scatter graphs, designed for Grade 8 students to review concepts through various question types.
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Positive: Mixed Review
Subject: MathematicsGrade: Grade 8
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Date:
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Untitled Worksheet
Grade Grade 8
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Plot the points for the data set where 'Hours studied' are 1, 2, 3, 4, 5 and 'Test scores' are 50, 60, 70, 80, 90. Draw the scatter graph to represent this data.
[3 marks]2.
Calculate the correlation coefficient for the data points (1, 50), (2, 60), (3, 70), (4, 80), (5, 90).
[4 marks]3.
A scatter graph shows a positive trend with points generally rising from left to right. What does this indicate about the relationship between the two variables?
[2 marks]4.
Identify whether the following data set shows a positive correlation: (2, 20), (4, 80), (6, 60), (8, 100).
[1 mark]AYes
BNo
5.
Construct a scatter graph to represent the data: hours studied (2, 4, 6, 8) and scores (55, 65, 75, 85). Describe the trend.
[3 marks]6.
A dataset shows a clear positive correlation. What is one possible reason for this trend in real-world scenarios?
[2 marks]7.
Given the points (1, 40), (2, 50), (3, 55), (4, 65), (5, 70), estimate the trend of the data. Is the correlation strong or weak?
[2 marks]8.
A scatter plot of hours of sleep versus mood shows a positive correlation. What might be a practical application of this data?
[3 marks]9.
Determine the strength of the correlation if the points are tightly clustered along a line from bottom left to top right.
[2 marks]10.
If a student mistakenly plots points that form a negative trend, how should they correct their graph to show a positive correlation?
[2 marks]11.
Identify the common mistake in interpreting data with a positive trend and suggest a way to avoid it.
[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