Statistical skills

The link between simple probability and expected frequency is explored using a combination of statistics to investigate risk and its impact on life.

A combination of statistical information can be presented in diagrams. This involves constructing, interpreting and comparing pie charts and cumulative frequency diagrams.

Data sets can be compared using averages and measures of spread. A box plot displays information about the range, the median and the quartiles.

Standard deviation is a measure of the spread of data around the mean value. It is used in comparisons of consistency between different data sets. Two formulae can be used to calculate this.