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IB Maths AA SL 4.1 Sampling and Data

IB Maths AA SL 4.1 Sampling and Data
IB Mathematics: analysis and approaches guide, first assessment 2021

Practise classifying data and sampling methods, assessing reliability and bias and explaining how missing values, recording errors or outliers affect conclusions.

How this is tested

  • identify simple random, systematic, stratified, quota or convenience sampling from its procedure
  • explain bias by naming which part of the population is overrepresented or excluded
  • distinguish discrete from continuous data and assess the effect of errors, omissions or outliers

Question 4(c)

[Maximum number: 1]

A supermarket analyses the shopping habits of its customers.
The number of times, X, each customer visits the supermarket in a week is given by the following probability distribution.

Table for Question 4(c) — IB Maths AA SL

Identify which one of the following best describes the manager's sampling method. Circle your answer.

Simple random / Systematic / Convenience / Quota / Stratified