# S2 Edexcel Statistics Tutorials

It is advisable to check the official S2 Edexcel specification in case of any changes specification

## Contents

Discrete Random VariablesBinomial DistributionPoisson DistributionContinuous Random VariablesProbability Density Functions and Cumulative Distribution FunctionsContinuous Uniform /Rectangular distributions

Statistical ApproximationsPoisson Approximation to the Binomial DistributionNormal Approximation to the Binomial and Poisson Distributions

Estimation and SamplingEstimation and SamplingHypothesis TestsHypothesis Tests for the Binomial DistributionHypothesis Tests for the Poisson Distribution

## Discrete Random Variables

## Binomial Distribution

## Poisson Distribution

## Continuous random variables

## Probability Density Functions and Cumulative Distribution Functions

- What is a probability density function (p.d.f.)?
- Finding the constant k in a p.d.f
- Calculating probability from a p.d.f.
- The cumulative distribution function, (c.d.f)
- Finding the median quartiles and percentiles
- Finding the mode from a p.d.f.
- E(X) and Var(X)
- Exam Questions - Probability density functions and cumulative distribution functions