QM 214 Exam 1 Vocab .docx - Exam 1 Vocab 1 Statistics the...

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Exam 1 Vocab 1. Statistics: the science of data 2. Description: the use of tables, graphs, and numerical measures to summarize data 3. Inferential Statistics: the use of sample data to learn about a population (could also say: the use of statistics to learn about parameters) 4. Population: the entire set of items about which we desire information 5. Data/database/data set: values or outcomes of one or more variables for one or more observations 6. Variable: a characteristic that can have different values or outcomes 7. Observation: the set of information obtained for each item being “measured” 8. Quantitative (QT): values are numbers that result from a count or measure 9. Qualitative (QL): values/outcomes that are usually words; classifications, attribute, categorical (no math) 10. Frequency Table: lists every outcome and the count for each 11. Joint Outcome: the set of outcomes with respect to 2 or more variables 12. Crosstab: a table showing the frequency/count for each of all possible joint outcomes 13. Measures of Central Tendencies:

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