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Unformatted text preview: STA Class 23:53:43 Ch. 1 – Why Do You Need To Study Statistics? 1. To learn methods of Data collection 2. Data Analysis 3. Understanding of journal articles and news stories. Data • The observation gathered through methods such as surveys, experiments, direct observation of behavior, or recorded information. • Consists of measurements on characteristics of interest (variables). Statistics • Consists of a body of methods for collecting and analyzing data. Definitions Two Elements of Statistical Analysis o Descriptive Statistics – Summary description such as measure of center and variation (used to describe data) o Inferential Statistics – Drawing conclusions about the population, based on a sample. The 5 Fundamental Elements of Statistics 1. Population – Set of all units 2. Variable – Characteristic of an individual population unit (quantitive or qualative) 3. Sample – Subset of the population 4. Inference – Say something about the population based on a randomly chosen sample.Inference – Say something about the population based on a randomly chosen sample....
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This note was uploaded on 04/07/2008 for the course STA 2023 taught by Professor Bagwhandee during the Fall '07 term at University of Central Florida.
- Fall '07