Showing posts with label graph. Show all posts
Showing posts with label graph. Show all posts

Monday, May 2, 2016

Semester's End

It's the end of the semester and I saw this Post-It Note graphic that shows exactly how many people, especially students, approach an assignment's deadline. From Instagrammer Insta-Chaz via Visual News.

Monday, November 30, 2015

How to lie, no, display data in context

These are figures from the classic book "How to Lie with Statistics" by Darrell Huff. They illustrate an admonition against a dramatic scaling of a line graph (and also a bar graph) by not including zero on the vertical axis. This omission has long been a staple of those who want to mislead but, as the video from Vox below explains, often for their graphs, or charts as they call them, it is not always wrong to omit zero. Seeing the data in context is what's important. I especially like the illustration of plotting body temperature on the Kelvin scale. We should keep in mind the phrase attributed to the late Harvard statistician Frederick Mosteller, "While it is easy to lie with statistics, it is even easier to lie without them."