# S2 Edexcel Maths Tutorials

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

## Discrete Random Variables

## Binomial 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