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Redland Green School

KS4 Statistics

Statistics is about making decisions when there is uncertainty. Perhaps one of the most versatile areas of mathematics, it gives students the skills to collect, analyse, interpret and present data. 

It complements subjects such as GCSE Biology, Psychology, Geography, Business and Economics, and opens the door to a variety of careers – from weather forecasting to the biological sciences.


The Statistics GCSE course is divided into  eight units:

  1. Collection of Data
  2. Processing and Representing Data
  3. Summarising Data
  4. Scatter Diagrams and Correlation
  5. Time Series
  6. Probability
  7. Index Numbers
  8. Probability Distributions


How is the course examined?

There are two exams at the end of Year 11. Each of them are 1 hour 30 minutes long and are out of 80 marks. They both count for 50% of your final grade.


How is the course structured?

Year 10 Year 11

Term 1 and 2:

The collection of data


Types of data

Population and sampling


Collecting data


Term 3 and 4:

Processing, representing and analysing data

Tabulation, diagrams and representation


Term 5 and 6:

Processing, representing and analysing data

Measures of central tendency

Measures of dispersion

Scatter diagrams and correlation

Term 1 and 2:

Processing, representing and analysing data

Time series 


Experimental and theoretical probability

Further summary statistics


Term 3 and 4:

Probability distributions

Processing, representing and analysing data

Standardised scores

Quality assurance

Statistical enquiry cycle/A03 practice


Term 5:



Why is the course sequenced in this way?

This course is sequenced around the key functions of a statistician. You will begin the course by learning the different ways of how a statistician collects data. After this, you will then see how a statistician takes the data they have collected and make it easier to read and make deductions from through the different representations of data. Once you have understood how the data can be represented in different ways, you will then learn how to carry out a statistical enquiry yourself by seeing if there is a relationship between variables using probability theory. 

How should you revise for this exam?

Just like with the normal mathematics GCSE the best course of revision is to practice past papers to get used to the language and style of exam questions which you will likely encounter in the real exam.