# STT215: THE ROLE OF STATISTICS Dr. Cuixian Chen Introduction to Statistics Analysis STT215 1.

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STT215: THE ROLE OF STATISTICS Dr. Cuixian Chen Introduction to Statistics Analysis STT215 1

WHAT IS STATISTICS?  collection or gathering of data  displaying, analyzing, and summarizing data  inferring information from data

EXAMPLES OF STATISTICS 1. Is hormone replacement therapy associated with heart disease or stroke? 2. Is the productivity and yield of maize significantly effected by the environment: drought, UV or both? 3. What are promising locations for a new retail outlet? STT215 3

THE ROLE OF STATISTICS Market Research: Are consumer tastes in television programs changing? What are promising locations for a new retail outlet? Statistician: Market researchers use both government data and their own surveys to answer questions such as these. Statisticians design the elaborate surveys that gather data for both public and private use.

THE ROLE OF BIOSTATISTICS Biology: Is the productivity and yield of maize significantly effected by the environment: drought, UV or both? Statistician: Designing studies for and analyzing data from agricultural experiments to increase productivity and yield. STT215 5

THE ROLE OF STATISTICS 1. Survey and estimate the unemployment rate, average family income in the United States (at the Bureau of Labor Statistics) 2. Evaluate the environmental impact of air, water, and soil pollutants (at a research laboratory, commercial environmental clean-up firm, or the Environmental Protection Agency)

AVERAGE SALARY OF JOBS WITH RELATED TITLES FROM HTTP://WWW.INDEED.COM/SALARY/STATISTICIAN.HTMLHTTP://WWW.INDEED.COM/SALARY/STATISTICIAN.HTML STT215 7

Biostatistician Job hunting websites:  www.indeed.com www.indeed.com  www.biospace.com www.biospace.com  www.craigslist.org www.craigslist.org Other websites:  www.monster.com www.monster.com  www.careerbuilder.com www.careerbuilder.com http://monster.salary.com/SalaryWizard/Biostatistician-I-Salary-Details.aspx STT215 8

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