Data resulting from measurements taken on a discrete variable, i.e. one that can't be divided up into infinitely small parts (examples: value of coins in pupils’ pockets; number of peas in a pod).
Discrete data may be grouped. Example: Having collected the shoe sizes of pupils in the school, the data might be grouped into ’number of pupils with shoe sizes 3, 5, 6, 8, 9, 11, etc.