In "End of Watch," the FBI identifies a suspect for the murder of a police officer. When they go to question him, they find that he has been drugged and killed. Using the specific chemical makeup of the drug, Charlie believes he can use a statistical identification method to trace it back to a specific drug dealer who may be involved in the crimes. While the method is not named, the chalkboard work in the scene is similar to this activity - the concepts of statistical testing and chi-square tests.
Before the Activity
Download the attached PDF and look over the Teacher Page.
During the Activity
Discuss the materials from the Student Page with your class.
After the Activity
Encourage students to explore web sites and questions from the Extensions Page.