Tableau – How to Effectively Analyse Critical HHS Data
In 1854, Britain’s Soho neighborhood suffered a severe outbreak of cholera. People were dying, but no one was sure how they were contracting it. Conventional wisdom said the dreaded illness was airborne, but British physician John Snow rejected this notion and began plotting cholera cases on a map. This visualization allowed Snow to clearly see that all cholera cases in the neighborhood originated at a local water pump. Snow removed the pump handle and cases of cholera dropped. John Snow’s map gave him the “aha” moment he needed to link cholera to water. Without the map, he had the data — but no way to see what it meant.