year 8 maths

538 Chapter 9 Data collection, representation and analysis
ENRICHMENT
– –
14
How many ways?
14 As well as being able to draw a graph horizontally or vertically, the order of the categories can be
changed. For instance, the following three graphs all represent the same data.
Number of sightings
8
6
4
2
0
antelope
Animal sightings
bear
cougar
Animal
dingo
elephant
Animal
dingo
cougar
antelope
bear
elephant
0
Animal sightings
2 4 6 8
Number of sightings
Number of sightings
8
6
4
2
0
elephant
Animal sightings
cougar
dingo
Animal
antelope
bear
How many different column graphs could be used to represent the results of this survey? (Assume
that you can change only the order of the columns, and the horizontal or vertical layout.) Try to list
the options systematically to help with your count.
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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