Chapter 1: Statistical Sampling

A-level MathematicsStatistics and Mechanics6 topicsHigher

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alevel · mathematics · Statistics and Mechanics · All papers

Releases 1 August 2026

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Data Collection and Sampling Long-Answer Questions

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4 questions24 marks36 min

standard / hard / synoptic

6 marksfindstandardEdexcel

SM01-1: a stratified sample of 80 from groups 120, 200 and 80. Find 24, 40 and 16 for sampling methods and bias. Show the method clearly by using multiply the total sample size by each group proportion.

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6 marksshow thatstandardEdexcel

SM01-2 verification: show that the printed answer is valid by applying multiply the total sample size by each group proportion. Include a check using a stratified sample of 80 from groups 120, 200 and 80.

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6 marksprovehardEdexcel

SM01-3 proof: starting with a stratified sample of 80 from groups 120, 200 and 80, prove 24, 40 and 16 for sampling methods and bias; give restrictions.

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6 markshencesynopticEdexcel

Using SM01-4's earlier result 24, 40 and 16, hence solve the linked problem in sampling methods and bias and state whether the answer is exact or rounded.

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Start of Statistics and Mechanics

2. Data Presentation and Interpretation

Key learning objectives

Understand the key principles behind Statistical Sampling.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.