PPT-Statistics and Hypothesis Testing in Science

Allen Mincer New York University July 2019 1 BNL June 2019 On Statistics Mark Twain popularized the saying see end of quote in Chapters from My Autobiography published in the North American Review in 1906 Figures often beguile me he wrote particularly when I have the arranging of them myself in which case the remark attributed to Disraeli would often apply with justice and force There are three kinds of lies lies damned lies and statistics . **You’re not really Dummies**. Before Starting. Disclaimer: . We can’t teach a whole quarter of statistics, but we can teach you how to study. Studying . for statistics requires reading the book!. Ho - this hypothesis holds that if the data deviate from the norm in any way, that deviation is due strictly to chance.. Alternative hypothesis. Ha - the data show something important.. Doing decision = accept/reject Ho (the decision centers around null hypothesis). Article: Do left-handers die earlier?. Group 3: Annabella Fong, Bok Wen Xuan, Goh Jie Sheng. Outline. Correlation of left-handers with age. Hypothesis testing using sample of Baseball players. Hypothesis testing using sample of . Test of hypothesis - Test whether a population parameter is less than, equal to, or greater than a specified value.. Remember an inference without a measure of reliability is little more than a guess.. Chong Ho Yu (Alex). Ford's Model T in Statistics. Most statistical procedures that we still use today were invented in the late 19. th. century or early 20. th. century.. The t-test was introduced by William Gosset in 1908.. Sample. , shape, location, and spread. Sample = make sure it's random, handle missing data (mcar, mar, nmar), imputation . methods. NMAR!. . Shape = Is the data skewed, normal, or flat? If normal then we can use statistical analysis for normal . Behavioral. . Sciences. Session . #. 17:. Hypothesis. . Testing. : . The Confidence . Interval. . Method. and the . T-Statistic. . Method. (. Agresti. and Finlay, . from. . Chapter. 5 to . Chapter. Scientific Method and Hypothesis Testing “Whereas other types of human speculation are based on mere opinion, science pursues and sticks to the facts” Hypothesis and Perception: The Roots of Scientific Method A nuclear power plant adjacent to a residential area. STATISTICS FOR BUSINESS. (Hypothesis testing for a single population). A nuclear power plant. adjacent to a residential area. Two . local . residents die . Raymond Hubbard is the Thomas F. Sheehan Distinguished Professor of Marketing, Drake University,Des Moines, IA 50311. M.J. Bayarri is Professor of Statistics, University of Valencia, Burjassot, Valenc Frances Chumney, PhD CONTENT OUTLINE  Logic of Hypothesis Testing  Error & Alpha  Hypothesis Tests  Effect Size  Statistical Power HYPOTHESIS TESTING 2 HYPOTHESIS TESTING LOGIC OF HYPOT A Decision-Making Approach. 8. th. Edition. Chapter 9. Introduction to Hypothesis Testing. 9-. 2. Chapter Goals. After completing this chapter, you should be able to:. . Formulate null and alternative hypotheses involving a single population mean or proportion. a Holistic Approach. Chapter 9. One Population Hypothesis Testing. This Course Material by Maurice Geraghty is licensed under a Creative Commons Attribution-. ShareAlike. 4.0 International License. . Dr David Butler. Maths Learning Centre. University of Adelaide. Semester 1 2022. Research and Critical Appraisal. You NEED statistics because things VARY. You want to:. d. escribe how things vary. figure out what is usual.