Mean, Median, Mode and Range (Edexcel GCSE Maths): Flashcards

The arithmetic average of all values

The middle value when data is in order

The value that appears most frequently

The difference between highest and lowest values

$\frac{\text{Total of all items}}{\text{Number of items}}$

$\text{Highest value} - \text{Lowest value}$

Always rearrange data in ascending order first

Uses every single piece of data

Can be heavily influenced by extreme values (outliers)

Not affected by extreme values

Always represents an actual data value

How spread out the data is