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Class Notes #1

Class Notes #1 - • Quantitative numerical values o...

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Class Notes #1 29/08/2009 15:34:00 Statistic  anything you calculate from a sample Two Branches     o Descriptive  summarizes data to get an overview Probability Theory o Influential  generalizing data to a population from a sample Population  the group of interest to the researcher Sample  the subset of the population for which the researcher has information P    arameters  a value in a p roportion S    tatistic  a value in a s ample Observation  an entity for which we have data There are different levels of observation Variables  something whose value differs from observation to observation
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Unformatted text preview: • Quantitative numerical values o Discrete take on a limited set of values o Continuous any value within a range • Qualitative non-numerical o Ordered rank things o Categorical belong to a group o Nominal no ranking ( assigned numerical values) Dummy Values values of 0 or 1 Something does (1) or does not (0) meet some condition ← ← Descriptive Statistics • A clear way to summarize with as much information 29/08/2009 15:34:00 ← 29/08/2009 15:34:00 ←...
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