Sampling & Data Collection
Populations and samples, sampling techniques (simple random, systematic, stratified, quota, convenience), sources of bias, reliability of data and interpreting outliers (syllabus 4.1).
Start practising → Formula sheet (PDF) ↗Sample questions
- Easy Population and sample No Calculator [2]
- Medium Stratified sampling No Calculator [4]
- Medium Convenience sampling and bias No Calculator [3]
About this topic
These are original, exam-style questions written to match the IB Mathematics syllabus for Analysis & Approaches HL (Topic 4.1). Every question has a full worked solution with mark allocations matching real IB marking schemes.
How to practise
- Open the question bank using the button above.
- Attempt the question, writing out your working.
- Reveal the full worked solution and compare your method step by step.
- Use the difficulty and calculator filters to focus on what you need most.