# S1 Tutorials

## Collecting Data

## Understanding population, census and samples

## 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

## 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

## Probability

## Possibility Space (Sample Space)

## Tree Diagrams

## Permutations and Combinations in Probability

## Discrete Random Variables

## Discrete Random Variables

## Binomial Distribution

## The Normal Distribution

## The Normal Distribution

- The normal distribution
- The standard normal distribution Z~N(0,1) - Using tables or calculator
- Probabilities from a normal distribution using tables
- Exam Questions - Normal distribution, finding a probability
- Calculating the mean μ and standard deviation σ
- Exam Questions - Calculating the mean and standard deviation
- Exam Questions - Finding an observed value