Mode, median and mean

Eight runners' distances, in km, last week were 14, 9, 21, 6, 17, 11, 25 and 8. Work out the median distance.

A café sold 7, 12, 9, 15 and 7 cakes on five days. Work out the mean number of cakes sold per day.

A netball team scored these numbers of goals in nine matches: 3, 5, 2, 5, 4, 3, 5, 1, 2. What is the mode?

A shop records which crisp flavour each customer buys: ready salted, cheese and onion, salt and vinegar or prawn cocktail. Which average can it find for these data?

The salaries, in £ thousands, of the six staff at a small firm are 18, 19, 20, 21, 22 and 95. Which average best represents a typical salary?

Five plants have a mean height of 12 cm. A sixth plant 18 cm tall is added. Work out the new mean height.