Cambridge International Mathematics

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inside USA outside USA

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118 Graphs, charts and tables (Chapter 5)

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2 Pedro sells small ceramic items on an internet auction site. He

lives in the USA and sells within his country and overseas.

He uses the standard postal service for local deliveries and a

private freight company for international ones. Pedro records

the number of items that are broken each month over a 70

month period. Which delivery service is Pedro happier with?

Explain your answer.

Season 2007 Season 2008

430 0

8861 1 4

9655 2 06

97620 3 13369

74 4 224589

7 5 2367

2 6 11 Key: 2 j 0 means 20 runs

3 This stem-and-leaf plot shows the one day

international cricket scores for a batsman in

the 2007 and 2008 seasons.

a In which season was the batsman more

consistent?

b In which season did the batsman score

more runs?

4 The house sales of a real estate agency for 2007 and 2008 are summarised in the table below:

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

2007 2 8 8 11 25 26 31 34 28 13 10 4

2008 5 3 6 14 21 25 28 29 15 13 7 3

a Construct a back-to-back bar chart of the data.

b Compare the sales in the two years.

5 Two brothers living together travel by different means to university; Alex travels by train and Stan

travels by bus. Over a three week period, their travel times in minutes were:

Alex 17 22 34 60 41 15 55 30 36 23 27 48 34 25 45

Stan 31 19 28 42 24 18 30 36 34 25 38 31 22 29 32

a Construct a back-to-back stem-and-leaf plot of the data.

b Which mode of transport is more reliable? Explain your answer.

6aConstruct a side-by-side stem-and-leaf plot for the data in theOpening Problemon page 111.

b Is there a noticeable difference between the data sets?

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Y:\HAESE\IGCSE01\IG01_05\118IGCSE01_05.CDR Thursday, 18 September 2008 11:58:14 AM PETER