Pearson himself noted in 1895 that although the term "histogram" was new, the type of graph it designates was "a common form of graphical representation". In fact the technique of using a bar graph to represent statistical measurements was devised by the Scottish economist, William Playfair, in his Commercial and political atlas (1786).
Pearson himself noted in 1895 that although the term "histogram" was new the type of graph it designates was "a common form of graphical representation" In fact the technique of using a bar graph to represent statistical measurements was devised by the Scottish economist William Playfair in his Commercial and political atlas (1786)