QUESTION 2 The Big Mac index is: an indicator of the economic wealth of a country, applied to a capacity to purchase Big Macs with the average wage. a measure of interest rate parity, such that the exchange rates between countries can be compared to assess whether or not interest rates are too high or low in a particular country relative to other major currencies in the world. a measure of purchasing power parity applied to a 'real' product that is essentially identical and available around the world. a measure of interest rate parity such that the exchange rates between countries can be compared and a measure of purchasing power parity applied to a 'real' product that is essentially identical and available around the world