CAIE IGCSE Mathematics Core C9.2 Interpreting Statistical Data Topic Practice

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Covered syllabus points

C9.2.1 Read, interpret and draw inferences from tables and statisticalC9.2.2 Compare sets of data using tables, graphs and statistical measures.C9.2.3 Appreciate restrictions on drawing conclusions from given data

Question 1

[Maximum number: 1]

The bar chart shows the number of goals scored by a team in each of 5 months.

Figure for Question 1 — CAIE IGCSE Mathematics Core

How many more goals were scored in January than in October?

Question 2

[Maximum number: 2]
Table for Question 2 — CAIE IGCSE Mathematics Core

Jamie records the masses of two samples of oranges, type A and type B. The stem-and-leaf diagram shows the mass, in grams, of each of 30 oranges of type A.

StemLeaves
176 8 8 9
180 1 2 2 4 7
191 2 2 3 6 7 8
200 2 5 5 5 6 7 7 8
211 5 6 8

Key: 17|6 represents 176 grams

Use the information in the table to write down two comments comparing the masses of type A oranges with the masses of type B oranges.
1.
2.

Question 3

[Maximum number: 1]

Daryl records the number of hours in a week 8 people spend exercising.
5, 2, 1.5, 3, 18, 4.5, 2, 4

Explain why the mean may not be a suitable average to use.

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