Cambridge International Mathematics

Graphs, charts and tables (Chapter 5) 121

Animal Number

Chickens 12

Cows 35

Dogs 4

Ducks 10

Geese 5

Goats 24

Pigs 11

Sheep 19

2 Farmer Jane owns the assortment of animals shown in the table alongside.

a Display this data on a vertical bar chart.

b What percentage of animals on the farm are chickens?

c Name the three most common animals on the farm.

2004 2005 2006 2007 2008

Males 10 8 5 10 14

Females 15 18 17 20 18

3 The table alongside shows the number of males

and females participating in the school’s drama

class each year for the last five years.

a Display the data on a side-by-side bar

chart.

b In which year was there the greatest difference between the number of males and females?

Weight of calves (kg)

2 8

3 149

4 03367

5 1444558

6 35 Key: 6 j 3 means 63 kg

4 For the given data on calf weights:

a Explain what 5 j 1 means.

b Find the minimum calf weight.

c Find the maximum calf weight.

d Find which weight occurs most frequently.

5 Huw owns a flower shop. The table below shows the total cost of supplying, as well as the sales

for each flower type, for the past year.

Flower Roses Carnations Tulips Orchids Azaleas Lilies

Cost($) 17 000 15 000 8000 7000 5000

Sales($) 35 000 25 000 16 000 15 000 15 000 14 000

a Draw two pie charts to display the data.

b

c Which two flower types account for half of the total sales?

d Huw needs to reduce his workload, so he decides to stop selling one type of flower. Which

flower type would you recommend he stop selling? Explain your answer.

6 To determine if a weight-loss program is effective, a group of 25 men trialled the program for three

months. Their weights in kilograms before starting the program were:

95 104 93 86 82 111 100 125 117 121 119 97 120

104 132 111 98 83 123 79 101 135 114 99 122

Their weights after completing the program were:

79 92 84 78 68 99 85 106 99 107 102 83 110

93 125 96 79 74 113 68 89 122 95 83 106

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

b Would you say that the weight-loss program is effective? Explain your answer.

8000

Which two flower types account for more than half of the total costs?

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Y:\HAESE\IGCSE01\IG01_05\121IGCSE01_05.CDR Wednesday, 8 October 2008 4:37:23 PM PETER