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CHAPTER ONE

CHAPTER ONE. INTRODUCTION TO STATISTICS. Section 1.1. An Overview of Statistics. VOCABULARY. Data: consists of information coming from observations, counts, measurements, or responses.

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CHAPTER ONE

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  1. CHAPTER ONE INTRODUCTION TO STATISTICS

  2. Section 1.1 An Overview of Statistics

  3. VOCABULARY • Data: consists of information coming from observations, counts, measurements, or responses. • Statistics: the science of collecting, organizing, analyzing, and interpreting data in order to make decisions. • Population: The collection of ALL outcomes, measurements, or counts that are of interest. • Sample: a subset (or part) of the population

  4. EX: Classifying Data Sets Determine if the set is a population or a sample. Explain your reasoning. • The annual salary of each pharmacist at a pharmacy. • The cholesterol levels of 20 patients in a hospital with 100 patients.

  5. EX: Identifying Populations & Samples • A study of 33, 043 infants in Italy was conducted to find a link between a heart rhythm abnormality and sudden infant death syndrome. (source: New England Journal of Medicine) • A survey of 1442 US adults found that 36% received an influenza vaccine for the current flu season. (source: Zogby International)

  6. More Vocab! • Parameter: a numerical description of a POPULATION characteristic. • Statistic: a numerical description of a SAMPLE characteristic. • There are 2 branches of Statistics… • 1. Descriptive Statistics: involves organization, summarization, and display of data. • 2. Inferential Statistics: involves using a sample to draw conclusions about a population.

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