Latest Big Mac Index published by The Economist, based on the theory of purchasing-power parity: that, in the long run, exchange rates should adjust to equal the price of a basket of goods and services in different countries. In this basket consists of one McDonald’s Big Mac.

So you can see Aussie Dollars is bubbling overvalued. Chinese Currency RMB Yuan is significantly undervalued.

Read more: http://www.economist.com/node/21542808