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82410 - Data and Databases Importance of data Elements of a...

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1 1 Main Ideas Importance of data Elements of a database Common summary measures of data Summary by groups Data and Databases 2 1. Show me the data! Importance of data to society and sciences Standardized tests scores required for “no child left behind” law Genetic data help identify diseases and cures Economic data used to measure inflation and set interest rates for home loans Yield data help agronomists develop better crops Automobile crash data help engineers design safer cars 3 2. Database A database is a way to store and keep track of “raw” data Instructors create databases to keep track of grades of their students Database consists of individuals and variables 4 3. Individuals Individuals are the subjects or objects upon which observations are taken Examples: Persons contacted by phone in a survey Animals in a feeding trial Patients in a medical study Automobiles in a gas mileage study 5 4. Variables
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