This graph, taken from Coca Cola’s Water stewardship page, presents a very misleading picture on how effectively Coca Cola has improved their water efficiency.

This graph for me highlights an important reason that we need to teach critical analysis of graphs and statistics. Do you see the problem with the graph? (Hint: check the scale of the graph).

## Dvora says:

This is something I tried to highlight with my students while working on graphs this year. They seems to think no matter the graph that counting squares is the way to do it. They are getting there slowly. 🙂

April 4, 2011 — 7:55 pm