In f1 racing ( lap times )
A score that tries to show the middle of a group of scores.
At the shop you would need to know what the average of what something costs.And two: the average of what you eat if a baby sitter was looking after you. :-D
You would need to know the average if you go somewhere every week or month and you would might have to know the average or the mean of how often you go to that place
Averages are used in shops and supermarkets and clothes shops and book shops and toy shops averages are found everywhere.