# S1 Tutorials – OCR A Level Maths

## Contents

## Representing Data

## Mean

## Median and Quartiles

- Median, lower, upper quartiles and interquartile range for discrete data
- Exam Questions - Median, lower, upper quartiles and interquartile range for discrete data
- Cumulative frequency curves
- How to interpret class intervals
- Estimating the median, quartiles, percentiles from a grouped frequency table
- Exam Questions - Estimating the median from a grouped frequency table
- Exam Questions - Estimating the median from a histogram

## Standard Deviation

## Statistical Diagrams

## Probability

## Possibility Space (Sample Space)

## Tree Diagrams

## Venn Diagrams

## Independent, Dependent and Mutually Exclusive Events

## Permutations and Combinations

## Permutations and Combinations

- Permutations of n different items
- Permutations of r items from n different items
- Permutations of repeated letters in a word
- Permutations with restrictions: letters / items together
- Permutations with restrictions : items at the ends
- Permutations with restrictions : items must not be together
- Combinations of n different items
- Combining combinations
- Probability using permutations and combinations