In this historical reenactment, Florence Nightingale uses applied statistics to disprove the medical assumptions of her day. Using fatality counts from the Crimean War, Nightingale develops a progressive series of statistical diagrams that reveal startling information: most soldiers did not die of their wounds, as reported, but in army hospitals, from diseases related to poor hygiene. When further data show army death rates twice that of the civilian population, Nightingale traces the cause to overcrowded, disease-ridden barracks. Produced by the Open University. (25 minutes)