VCE General Maths Data Analysis 2017 Mini Test 2
VCAA General Maths Exam 2
This is the full VCE General Maths Exam with worked solutions. You can also try Mini-Tests, which are official VCAA exams split into short tests you can do anytime.
Number of marks: 8
Reading time: 2 minutes
Writing time: 12 minutes
Instructions
• Answer all questions in the spaces provided.
• Write your responses in English.
• In all questions where a numerical answer is required, you should only round your answer when instructed to do so.
• Unless otherwise indicated, the diagrams in this book are not drawn to scale.
Data analysis - 2017 - Exam 2 (Part 2)
The back-to-back stem plot below displays the wingspan, in millimetres, of 32 moths and their place of capture (forest or grassland).
a. Which variable, wingspan or place of capture, is a categorical variable? 1 mark
b. Write down the modal wingspan, in millimetres, of the moths captured in the forest. 1 mark
c. Use the information in the back-to-back stem plot to complete the table below. 2 marks
| Place of capture | Wingspan (mm) | ||||
|---|---|---|---|---|---|
| minimum | \(Q_1\) | median (M) | \(Q_3\) | maximum | |
| forest | 20 | 21 | 32 | 52 | |
| grassland | 18 | 24 | 30 | 45 | |
d. Show that the moth captured in the forest that had a wingspan of 52 mm is an outlier. 2 marks
e. The back-to-back stem plot suggests that wingspan is associated with place of capture.
Explain why, quoting the values of an appropriate statistic. 2 marks
End of Multiple-Choice Question Book
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