Unit 1-V006 - Statistics Statistics V3100018.006 UNIT 1...

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Statistics – V3100018.006 UNIT 1 Statistics – V3100018.006 UNIT 1 Giuseppe Arbia , Catholic University of the Sacred Hearth, Roma, Italy 1 04/05/12
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2 Introductory remarks 04/05/12 Why are you here? To learn the “ statistical method
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3 Introductory remarks 04/05/12 Centers on the 2002 Oakland Athletics baseball team, who were led by general manager Billy Beane to an excellent season despite having the lowest payroll in the major leagues. In addition to scouting and more conventional methods of assembling a team, Beane introduced statistics and mathematical analysis into player evaluation , to the chagrin of many traditionalists. http://www.imdb.com/video/imdb/vi2468191769/
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4 Introductory remarks 04/05/12 “Istead of using -swishing and spitting- approach of wine gurus, Orley Ashenfelter has used statistics to find out what characteristics of wintage are associated with higher or Lower auction prices”
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5 Introductory remarks 04/05/12 Statistics : A method in the empirical research
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A classification of sciences Sciences Formal Factual Logics Mathematics Natural Cultural Physics Chemistry Biology Psicology Social Psicology Sociology Economics History political Sciences Communicatione studies Bunge, M. (1967). The Scientific Research. (pp. 3-45). Berlin : Springer Verlag. Ristampato in Philosophy of Science   (Transaction Publishers, 1998). 04/05/12 6
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Aims of empirical research Describe reality Understand it, explain it Forecast the future Produce (reproduce) some phenomena Solve practical problems 04/05/12 7
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04/05/12 8 De-finition Need for simplicity
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04/05/12 9 The quantitative method Studying the laws through which the phenomena susceptible of a measurement vary, idealize them, by eliminating some properties or providing them with others and establishing one or more elementary hypotheses that regulate their simultaneous evolution: this represents the moment in which we truly build the foundations the entire analytical building could rely on … …It is here that we see shining all the powers that mathematics offers. To give life to concepts so that we can introduce a measure . To measure . Then induce laws ; to go back from them to hypotheses ; deduce from these through the analysis, a science of idealized entities that are however rigorous and logic; compare the with observed reality ; reject or transform these hypotheses when we observe contradictions between the theoretical calculus and the real world; and thus being able to
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This note was uploaded on 04/05/2012 for the course STATS V3100018.0 taught by Professor Giuseppearbia during the Spring '12 term at NYU.

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Unit 1-V006 - Statistics Statistics V3100018.006 UNIT 1...

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