# A Level Statistics Notes and Worksheets

The topics are organised according to Units S1 and S2 of Edexcel A Level, but the arrangement of topics for other boards is very similar.

The notes may be useful to a student without access to a teacher or a textbook. Or possibly to a teacher looking for a quick source of some teaching material on a particular topic. They contain references to exercises - these refer to the Heinemann (blue) Edexcel textbooks.

There are not many worksheets in this section as in general I used the exercises in the textbooks. Those listed may be of use to teachers looking for a quick source of some extra questions. They are probably not much use to students as they do not have answers, except where stated. (In some cases I may be able to supply answers if requested.)

### Worksheets

#### Unit S1

Histograms and Box Plots
 Notes-Histograms and Box Plots
Averages and Measures of Spread
 Notes-Averages and Measures of Spread
Probability
 Notes-Probability Notes-Set Notation
Correlation and Regression
 Notes-Correlation and Regression v1 Notes-Correlation and Regression v2
Discrete Probability Distributions
 Notes-Discrete Probability Distributions Notes-Discrete Uniform Distribution
Normal Distribution
 Notes-Normal Distribution

#### Unit S2

Permutations and Combinations
 Notes-Permutations and Combinations
Binomial and Poisson Distributions
 Notes-Binomial Distribution Notes-Poisson Distribution
Using one distribution as an approximation to another
 Notes-Using one distribution as an approximation to another
Continuous Probability Distributions
 Notes-Continuous Probability Distributions
The Continuous Uniform Distribution
 Notes-The Continuous Uniform Distribution
Sampling Distributions
 Notes-Sampling Distributions
Hypothesis Testing
 Notes-Hypothesis Testing