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Data Collection

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Question 57

A lake contains five different types of fish.
There are an estimated 375 Roach, 250 Bream, 125 Rudd, 250 Tench and 500 Carp.
John wishes to investigate the health of the fish in the lake.
He decides to take a sample of 132 fish.

Give a reason why stratified random sampling cannot be used.

[1]
Markscheme

Data Collection Questions

  1. A Level
  2. /Maths
  3. /Data Collection

59 exam-style questions on Edexcel A Level Maths Data Collection, covering 1.1 Populations and Samples, 1.2 Sampling, 1.3 Non-Random Sampling, 1.4 Types of Data, and 1.5 The Large Data Set. Each one has a worked solution and a mark scheme showing where the marks go.

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