William Playfair
The Inventor of Three Graphs
Background
William Playfair was born on September 22 , 1759 and died on February 11 , 1823.
Playfair was a Scottish engineer and political economist. He had 2 brothers one called James and the other called John.Sadly his father died when William was 13, leaving John the man of the house.
William also had many careers which he all quit. Also he failed two businesses.
The 1st Graph He Invented
The first Graph he invented was the line graph for economic reasons.Though not much else is known about this.
The 2nd Graph He Invented
The second graph he invented was the bar graph.
This idea was based of a a timeline William was looking at.
The bar graph like the line graph was used for economic reasons.
The 3rd Graph He Invented
the 3rd graph he discovered was the pie chart or a circle graph.But i didn't get anymore information than this.
this was used to show part-whole relationships.
Random math stuff
Why i did the photos below
don't ask why i did it but i feel like it
This document was by William Peng
Bibloigraphy
Google Images and Wikepidea