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Unformatted text preview: 090507 Introduction to Statistics Notes Ch. 1 1, 12with two degrees of separation, the target person is not countedconcept of 6 degrees of separation: 1967 study by psychologist Stanley Milgram found that two random residents in the United States are connected by an average of six intermediariesthe method used to collect sample data can make or break the validity of conclusions based on the datayou can learn about a large group be examining data from some of its memberscannot complete census studies because it is impossible to reach the entire population of the countryit’s extremely critical to obtain sample data that are representative of the population from which the data are drawnsample data must be collected in an appropriate way, such as through random selection or else they will be uselessthe word statistics is derived from the Latin word status meaning “state”early uses of statistics involved complications of data and graphs describing various aspects of a state or countrystatistics is largely about using sample data to make inferences, or generalizations, about a whole...
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This note was uploaded on 04/17/2008 for the course MATH unknown taught by Professor Sapko during the Fall '08 term at Mass Colleges.
 Fall '08
 Sapko
 Statistics

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