商业，工业，政府和研究领域的统计数据强调统计应用和数据分析。它适合对应用统计学家感兴趣的职业的学生。统计人员在无数进步中发挥了作用。例如，统计学家设计并分析了证明脊髓灰质炎疫苗有效性的现场试验，他们使用历史数据证明了使用死刑的种族偏见，并且他们设计并进行了临床试验，表明在HIV-阳性孕妇减少了婴儿的感染率。
Numerical information bombards today's world, challenging us to separate fact from fiction so that we can make informed decisions, and statisticians enjoy this challenge. They work in business, industry, government, and research, helping frame questions and determine what information is needed to answer them. They design experiments or surveys that generate relevant data, and then they analyze the data and communicate the results.<br><br>Statisticians have been instrumental in countless advances. For example, statisticians designed and analyzed the field trials that demonstrated the effectiveness of the polio vaccine, they used historical data to demonstrate racial bias in the use of the death penalty, and they designed and carried out clinical trials that showed drug treatment in HIV-positive pregnant women reduced the rate of infection in their babies.