year 8 maths

588 Chapter 9 Data collection, representation and analysis
6 In the column graph shown, the highest income is earned by:
A Michael B Alice C Dan D Laura E Victoria
Income ( $1000)
×
90
80
70
60
50
40
30
20
Annual income
10
0
Michael
Laura
Alice
Dan
Charles
Victoria
Name
The results of a survey are shown below.
Question 7 relates to the following information.
Instrument learned piano violin drums guitar
Number of students 10 2 5 3
7 If the results above are presented as a sector graph, then the angle occupied by the drums sector is:
A 360° B 180° C 120° D 90° E 45°
8 The median of the numbers 2, 4, 7, 9, 11, 12 is:
A 7.5 B 7 C 9 D 8 E 11
Questions 9 and 10 relate to the following information.
In a class of 20 students, the number of days each student was absent over a 10 -week period is
recorded.
1, 0, 1, 2, 2, 3, 2, 4, 3, 0, 1, 1, 2, 3, 3, 3, 2, 2, 2, 2
9 The mode is:
A 0 B 1 C 2 D 3 E 4
10 The mean number of days a student was absent is:
A 1 B 2 C 1.95 D 3 E 39
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
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