Pie chart
Videos
A pie chart is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice is proportional to the quantity it represent
Pie charts from William Playfair's "Statistical Breviary", 1801
One of the earliest pie charts, 1801
Polar chart by Florence Nightingale, 1858
Florence Nightingale
Videos
Florence Nightingale was an English social reformer, statistician and the founder of modern nursing. Nightingale came to prominence while serving as a manager and trainer of nurses during the Crimean
Pie chart
…Playfair thought that pie charts were in need of a third dimension to add additional information. Florence Nightingale may not have invented the pie chart, but she adapted it to make it more readable, which fostered its wide use, still today. Nightingale reconfigured…
Nightingale, c. 1860
Embley Park in Hampshire, now a school, one of the family homes of William Nightingale, seen in 2007
Young Florence Nightingale
Painting of Nightingale by Augustus Egg, c. 1840s