year 8 maths

522 Chapter 9 Data collection, representation and analysis
1 Arrange the following in ascending (increasing) order.
a 2, 4, 10, 7, 1, 0, 6, 14, 9
b 101, 20, 30.6, 204, 36, 100
c 1.2, 1.9, 2.7, 1.7, 3.5, 3.2
Pre-test
2 Write down the total and the mean (average) for each of the sets below.
a 4, 6, 8, 10 and 12
b 15, 17, 19, 19 and 24
c 0.6, 0.6, 0.6, 0.7 and 0.8
3 Use the information in the sector graph to
answer the following questions.
a What fraction of the income was spent on
food?
b What is the size of the angle for the rent
sector?
c If $420 is saved each month, find how
much is spent on:
i food
ii the car
60°
Budget
60°
rent
car
food
savings
4 a How many hours of television were
watched on Wednesday?
b How many hours of television were
watched on Monday?
c On which day was the most television
watched?
d How many hours of television were
watched over the week shown?
e What fraction of Saturday was spent
watching television?
Hours
9
8
7
6
5
4
3
2
1
0
Mark’s daily TV watching
Sun Mon Tue Wed Thur Fri Sat
Day of the week
5 Smarties can be purchased in small boxes. The small boxes are sold in a bag. The boxes in one bag
contained the following smarties: 12, 11, 13, 12, 11, 12, 14, 10, 12, 13, 14 .
a How many boxes were in the bag?
b Arrange the scores in ascending order.
c Draw a dot plot to represent the data.
d What is the most common number of smarties in a box?
e What is the mean number of smarties in a box?
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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