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# 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 Planning Types of data Population and sampling Estimation 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  Probability 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: Revision

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.

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