Chap_1 - Chapter 1 What Is Statistics? Chapter Goals After...

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Chapter 1 What Is Statistics?
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Chapter Goals After completing this chapter, you should be able to: Describe key data collection methods Know key definitions: Population vs. Sample Qualitative vs. Quantitative data Explain the difference between descriptive and inferential statistics
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Descriptive statistics Collecting, presenting, and describing data Inferential statistics Drawing conclusions and/or making decisions concerning a population based only on sample data Types of Statistics
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Descriptive Statistics Collect data e.g. Survey, Observation, Experiments Present data e.g. Charts and graphs Characterize data e.g. Sample mean = n x i
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Data Sources Primary Data Collection Secondary Data Compilation Observation Experimentation Survey Print or Electronic
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A Population is the set of all items or individuals of interest Examples: All likely voters in the next election All parts produced today All sales receipts for November
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Chap_1 - Chapter 1 What Is Statistics? Chapter Goals After...

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