Could you have a look at the following quiz on how inflation is measured:
http://www.bized.co.uk/virtual/bank/economics/mpol/inflation/causes/quiz2.htm
If you have finished that, move on to look at this quiz. You may need to look at the notes for some of the theories involved:
http://www.bized.co.uk/virtual/bank/economics/mpol/inflation/causes/quiz1.htm
Have fun!
Mr W
