A joke about the need for a comparison group. The joke was written in 2011 by Dennis Pearl from The Ohio State University and told in his after dinner talk at the 2011 USCOTS banquet.
This software allows you to extract data from published graphs. There is a web-based app and a downloadable version. First, you provide the software with a picture of the graph in question. Then you give it two points on the x-axis and two points on the y-axis for reference. Then you click on the points on the graph that you want to extract. The points are put into a .csv file.