PPT-Chapter 9 Tests of Hypotheses for a Single Sample

Chapter 9 Tests of Hypotheses for a Single Sample Applied Statistics and Probability for Engineers Sixth Edition Douglas C Montgomery George C Runger Chapter 9 Title and Outline 9 Tests of Hypotheses for a Single Sample. This limitation does not allow us under the procedures of hypothesis testing to address the basic question Does the length the reaction rate the fraction displaying a particular behavior or having a particular opinion the temperature the kinetic ene Virginibus Puerisque: Function of the Human Foreskin Considered from an Evolutionary Perspective COX Microscope Unit, University of Sydney, Sydney, NSW 2006, Australia (Tel: (+61) 2 351 3176; Fax: (+ One-factor ANOVA. Another dummy variable coding scheme. Contrasts. Multiple comparisons. Interactions. One. -factor . Analysis of variance. Categorical . Explanatory variable. Quantitative . Response variable. Prodipto. . Ghosh. , . Ph.D. Distinguished Fellow. The Energy & . Resources Institute. The Terrain of Equity in Climate Change. Securing the interest (and involvement of) future generations . Obligations of Parties in . Sources: D. Jensen. “Research Methods for Empirical Computer Science.”. . William M.K. . Trochim. . “Research Methods Knowledgebase”. More on Causality. What is causality?. What’s Important About Causality?. an . overview. Doug Levey (Dept. Biology). Take home messages. Start small (but above all, . start!. ). Proposal writing is a . skill. , requiring practice. Don’t be afraid of failure. Seek mentoring. Question 1. Question: What role do hypotheses play in scientific inquiry?. Answer: A . hypothesis. provides a . testable. explanation for an observation.. Question 2. Question: What is the difference between an independent variable and a dependent variable?. z. and . t. ) . Example: . Suppose you have the hypothesis that UW undergrads have higher than the average IQ than the US population. You know that IQ’s of the whole population of are normally distributed with a mean of 100 and a standard deviation of 15. How would you test your hypothesis?. Statistical . tests. Descriptive. . statistics. : . Description . of. . observations. Probability. . theory. : . Theoretical. . considerations. . (. no. . empirical. . data. ). Statistical . tests. EQ: What are the most effective ways to carry out a scientific inquiry?. Sometimes in science, events are so big (like the explosion of a volcano), or so small (like the movement of Euglena) or so distant (like the movement of a star) that it is impossible for our brains to understand them in their entirety.. Yunchao. Wei, Wei Xia, . Junshi. Huang, . Bingbing. Ni, Jian Dong, Yao Zhao, Senior Member, IEEE . Shuicheng. Yan, Senior Member, IEEE. 2014. . arXiv. IEEE. . Short Papers. . HCPIssue. Date: Sept. 1 2016. Score them. Assemble them into a composite explanation. Hypothesis Assembly Algorithm. Look for essential hypotheses. a hypothesis that is the only way to explain some data. Include/propagate/remove (see the next slide) and repeat from top. 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 STAT 1450. Connecting Chapter 15 to our Current Knowledge of Statistics. Chapters 10 & 12 used information about a population to answer questions about a . sample. (e.g. ., 20% of people are smokers, what is the probability that a random sample of 2 people smoke.