The arithmetic mean is the result of adding all numbers in a series, counting the number of numbers in the series, and then dividing the sum by the count.

Learn about the mean, median, mode and range with BBC Bitesize Key Stage 3 Maths.

Glossary Mean, median and mode There are several ways to calculate an average, the three most common being the mean, median and mode.

The mode is a statistical term for the value that occurs most frequently in a set of numbers. Learn about the difference between the mean, median, and mode.

The distinction is between the mean, which the Republicans emphasize, while the Democrats prefer the median. Before turning to the economy, let me review a little fourth-grade arithmetic.

Learn about the mean, median, mode and range with BBC Bitesize Key Stage 3 Maths.