If the latest raft of retail trading updates are anything to go on, it’s pretty clear who the winners were this Christmas: the consumers. A period of heavy discounting – aimed at bolstering weak sales and protecting elusive customer loyalty – was good news for cash-conscious customers, but left many
SAS has been used to track the spread of many things, such as wild animals, tornadoes, and money launderers -- but this time I'm using it to track the spread of Walmart stores across the U.S. over time! Since its start in the 1960s, Walmart has grown to be the largest
I recently read an interesting article in The Economist, where they describe "The Big Mac index." This is an index they invented as a lighthearted guide to compare currencies in different countries. In their article they create a multi-panel display (similar to a dashboard) where they compare the index for several countries using
