CHAPTER 1 NOTES - DEFINITIONS F17.doc

CHAPTER 1 NOTES - DEFINITIONS F17.doc - BUSN225 CHAPTER 1...

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BUSN225 CHAPTER 1 NOTES - DEFINITIONS 1. STATISTICS: A collection of numerical information 2. POPULATION: The entire group 3. SAMPLE: A part of a group 4. TYPES OF STATISTICS: a) Descriptive statistics are used to organize and summarize data, e.g., the mean b) Inferential statistics estimate something about a population based on a sample taken from the population, e.g., a confidence interval 5. VARIABLE: An attribute, a characteristic, a single piece of data , e.g., age 6. TYPES OF VARIABLES QUALITATIVE (Not numeric) QUANTITATIVE (Numeric) EXAMPLES Gender Nationality DISCRETE Counting – no decimals CONTINUOUS Measuring - decimals EXAMPLES Number of students Number of cars EXAMPLES Height Weight 7. LEVELS OF DATA
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