Answers
Showing a whole divided into parts
House prices each year
A plant's height measured every day
Fastest lap time for each driver
Shares of a total shown as slices
How total spending splits between men and women
Temperature recorded every hour of a day
Comparing bookings for each holiday type
Should use totals, not averages
Height of each pupil in a group
Showing how data changes over time
Comparing separate categories side by side