Revise how to plot a scatter graph from a time series, as well as construct a line of best fit with which to make a prediction. This guide contains a quiz and exam-style questions.

Revise how to construct a pictogram from a frequency table, as well as construct and interpret bar charts and pie charts. This guide contains a quiz and exam-style questions.

Revise how to construct and interpret a cumulative frequency graph, as well as construct a box plot from the same data. This guide contains a quiz and exam-style questions.

Revise how to construct, find frequencies and calculate the median from a histogram. This guide contains a quiz and exam-style questions.

Revise how to calculate the mean, mode, median and range from a set of raw data. This guide contains a quiz and exam-style questions.

Revise how to find the mean, mode and median for a discrete frequency distribution. This guide contains an interactive activity, a quiz and exam-style questions.

Revise how to find the mean, mode and median from a grouped table. This guide contains a quiz and exam-style questions.

Revise how the capture-recapture method uses a set of assumptions to estimate a population. This guide contains a quiz and exam-style questions.

Many companies and organisations collect data to improve their information and products. Skills in collecting data can make this process more efficient and reliable.

Data is represented in many different forms. Using bar charts, pie charts and frequency diagrams can make information easier to digest.

In statistics there are three types of average: the mean, the median and the mode. Measures of spread such as the range and the interquartile range can be used to reach statistical conclusions.