AMS 5 Chapter Notes - Chapter 2: Walnut Creek, California, Kaiser Permanente, Cervical Cancer

• School: UCSC
• Department: Applied Math and Statistics
• Course: AMS 5
• Professor: Yonatan Katznelson

Document Summary

The federal bureau of investigation reports state-level and national data on crimes. (a) an investigator compares the incidence of crime in minnesota and in. In 2001, there were 3,584 crimes in minnesota, compared to 4,082 in michigan. Michigan includes the big bad city of detroit. What do you say? (b) an investigator compares the incidence of crime in the u. s. in 1991 and 2001. In 1991, there were 28,000 crimes, compared to 22,000 in 2001. She concludes that the u. s. became more law-abiding over that time period. They"re using the absolute crime numbers instead of the rate per 100,000 people in each state. Minnesota and michigan have different population numbers, which means the groups the investigator is comparing are not equal, without factoring in economics and other confounding elements. Since the population for the u. s. went up some thirty million, it means that less people per 100,000 are committing crimes by a not insignificant margin.