The Big Mac Index

• Fast food consumption can be used as an index to measure consumer behaviour and market changes.
• The Pizza Principle, first noticed in New York City in the 80s, revealed that the cost of a subway ride and a slice of pizza remained the same ...

• An index is simply a collection (or "basket") of stocks. Let's say that we take the 500 U.S. stocks with the largest market caps and toss them into a big basket. That basket is called the S& P 500. 
• There's the Dow Jone...

A meaningful comparison of prices across countries requires a wide range of goods and services. To facilitate this University of Pennsylvania and UN joined forces to establish International Comparison Program.

PPPs generated by the ICP have a basis from a worldwide price survey that compare...