1. What is the Probability of Being Attacked by a Shark?

http://www.flmnh.ufl.edu/fish/Sharks/ISAF/ISAF.htm

The International Shark Attack File provides many interesting statistics about shark attacks. Worldwide 2002 statistics are reported on the incidence of a shark attack, the probability of an attack, and the likelihood of survival after an attack.

2. Comparing the Mean and the Median

http://www.mste.uiuc.edu/hill/dstat/centtendtest3.html

This Web site uses graphs to illustrate the difference between the mean and median.