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2 Unit AS 2: Applied Mathematics

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Question 56

A ferry operator wants to estimate the proportion of all summer passengers who are satisfied with its service.

Method A asks the first 100 passengers leaving the terminal at 09:00 on one Monday.

Method B selects 100 passengers so that the proportions travelling by car, coach and bicycle match the proportions in the full summer passenger records. Passengers are selected at random within each travel group.

a.

Identify the sampling method used in Method A.

[1]
b.

Give two reasons why Method A may give a misleading estimate.

[2]
c.

Identify the sampling method used in Method B and explain why it is preferable.

[2]
d.

State one limitation that could remain with Method B.

[1]
Markscheme

2 Unit AS 2: Applied Mathematics Questions

  1. A Level
  2. /Maths
  3. /2 Unit AS 2: Applied Mathematics

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