One of the articles in the post below linked to this site. It's worth posting separately because at some point I'll ask students to interpret graphical data. Just because two events move together, which implies that they are connected to each other, does not mean that they are related. The phrase you hear over and over again is "correlation does not imply causation."
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Click here for the site.
Here is one of the - inverse - correlations they highlight. The spike in juvenile arrests for possession of marijuana seems to have been caused by the reduction in honey producing bee colonies. Obviously if you want to reduce the number of juveniles smoking pot we have to increase the number of honeybees. Makes perfect sense.
