Exquisite chart by-of-for academics
This chart published in Harvard Magazine has won my heart.
It is
Simplicity
The index of an index is confusion
The puzzle of negative numbers
An overused chart, why it fails, and how to fix it
A chart with conceptual appeal but fails the data
Small multiples with simple axes
All the things they did well
Applying numbersense to a Bloomberg report
Eric P. asked me to comment on his recent post via twitter.
Four numbers say little, even on a busy chart
Reader Robert J. calls this a "really bad" chart (link)