GCSE Maths
GCSE Maths Stratified Sampling Exam Questions
Free GCSE Maths exam questions on Stratified Sampling, with full model answers. Covers calculating stratified sample sizes.
Stratified Sampling exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
About GCSE Maths Stratified Sampling
Stratified Sampling is a Grade 6+ GCSE Maths topic, so it mostly comes up on Higher tier papers. These questions suit CCEA GCSE. Work through the pack without notes, then mark every answer against the model answers and redo any you got wrong a few days later.
What you need to know
- Formula Group size ÷ total x sample size.
- Rounding Round to whole numbers.
- Purpose Represents each group fairly.
Common mistakes in Stratified Sampling
- Dividing by the sample size.
- Not checking totals.
Try two Stratified Sampling exam-style questions
1. A school has 300 boys and 200 girls. How many girls in a sample of 50? (1 mark)
Show the mark scheme answer
20
2. Why use stratified sampling? (1 mark)
Show the mark scheme answer
Each group is fairly represented
Stratified Sampling FAQs
Which exam boards include Stratified Sampling?
These questions suit CCEA GCSE.
What grade is Stratified Sampling in GCSE Maths?
It is a Grade 6+ topic, so it mostly appears on Higher tier papers.
How should I use these Stratified Sampling questions?
Answer every question without notes, then check each answer against the model answers and redo the ones you got wrong.
