📊 Mean, Median, Mode & Range Trainer

Work out the mean, median, mode and range of a data set, see the full working, and learn when each average is the right tool. 5 rounds, instant feedback, all on your device.

The data set

Mean (average):

Median (middle):

Mode (most frequent):

Range (max − min):

Score: 0/5

Which average when?

• Mean — total ÷ how many. Best when nothing is wildly out of line.
• Median — the middle value when sorted. Best with outliers (house prices!).
• Mode — the most common value. Best for categories, like “most popular shoe size”.
• Range — max − min. Not an average: it measures spread.

Watch out: a data set can have two modes (or no mode), and a set of 6 numbers has a median halfway between the 3rd and 4th sorted values.