After several major ocean oil spills, oil tankers have been designed with thicker hulls and other structural improvements. The intention is to reduce the chance of an oil spill in the future, and if a spill does occur, to reduce the amount of oil spilled. Infoplease (www.infoplease.com) reports the date, the spillage amount, and the cause of puncture for 50 recent major oil spills from tankers and carriers.

Identify the Five W’s, name the variables, specify for each variable whether its use indicates it should be treated as categorical or quantitative, and for any quantitative variable identify the units in which it was measured (or note that they weren’t provided or that the variable doesn’t have units).