The following table shows that the typical salary of part qualified accountants in five different regions of England.
Area????????????????????????????????? Typical salary
??????????????????????????????????????????????? $
South-east??????????????????????????21,500???????????????????????
Midlands??????????????????????????? ?20,800
North-east??????????????????????? ??18,200
North-west???????????????????????? ?17,500
South-west????????????????????????? 16,700
Which diagram would be the best one to draw to highlight the differences between areas?