Transcription of Basic Principles of Statistical Inference
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Basic Principles of Statistical InferenceKosuke ImaiDepartment of PoliticsPrinceton UniversityPOL572 Quantitative Analysis IISpring 2016 Kosuke Imai (Princeton) Basic PrinciplesPOL572 Spring 20161 / 66 What is Statistics?Relatively new disciplineScientific revolution in the 20th centuryData and computing revolutions in the 21st centuryThe world is stochastic rather than deterministicProbability theory used to model stochastic eventsStatistical Inference : Learning about what we do not observe(parameters) using what we observe (data)Without statistics: wild guessWith statistics:principled guess1assumptions2formal properties3measure of uncertaintyKosuke Imai (Princeton) Basic PrinciplesPOL572 Spring 20162 / 66 Three Modes of Statistical Inference1 Descriptive Inference : summarizing and exploring dataInferring ideal points from rollcall votesInferring topics from texts and speechesInferring social networks from surveys2 Predictive Inference .
3,000 Americans, derived from the National Longitudinal Study of Adolescent Health, and was published in the Journal of Theo-retical Biology. Publication in a peer-reviewed jour-nal seemed to have removed all skepti-cism, which is noteworthy given that the authors of Freakonomics are them-selves well qualified to judge social science research.
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