摘要：The idea that statistical relationships can change over time and space has been around for many centuries. Social scientists began investigating how statistical relationships shift over time, with techniques such as time series analysis, long ago and have only recently begun to explore shifts over geographical space. A map of the USA. mainland that makes use of recent population data to regress a geographically weighted regression is presented to show the reader an instance when a statistical relationship varies as a function of geographical space.
