Florence Nightingale and how she visualised data

Florence Nightingale became one of the icons of Victorian Britain for her work as a nurse during the Crimean War and the public health improvements she successfully campaigned for later on. Tim Harford discusses how she and her ‘Nightingale Circle’ used spectacular diagrams to explain health statistics persuasively with RJ Andrews, editor of “Florence Nightingale, Mortality and Health Diagrams”.