PPT-Size Effect Matthew Boyce

Huibin Hu Rajesh Raghunathan Lina Yang Introduction In this presentation we will review two articles on how the size of market capitalization affects portfolio performance The data sets given in both articles support the basic argument that smaller size results in a superior performance . Jed Friedman, World . Bank. SIEF Regional Impact Evaluation Workshop. Beijing, China. July 2009. Adapted from slides by Esther . Duflo. , J-PAL. Planning Sample Size for . Randomized Evaluations. General question: . Size. Robert Coe . @. ProfCoe. ResearchED. . 2013, Dulwich College, 7 Sept 2013. 2. The case for using effect size. What . is Effect Size? . The case for using effect size . (5 reasons). Problems in using effect size . Cohen’s . d. and Omega Squared. Jason R. Finley. Mon April 1. st. , 02013. http://. www.jasonfinley.com. /tools. ω. 2. DEAL WITH IT. Effect Sizes to use. Comparison of means . (. t. test):. Cohen’s . Roger E. Kirk. Department of Psychology & Neuroscience. Baylor University. . Three Categories of Measures of . Effect Magnitude. 1. Measures of effect size (typically, standardized mean differences). Chapter 8. Hyde, Fennema & Lamon (1990). Mean gender differences in mathematical reasoning were very small.. When extreme tails of the distributions were removed, differences were smaller and reversed direction (favored girls). for Statistics Instruction. Mark L. Berenson. Montclair State University. MSMESB Mini-Conference . DSI - Baltimore. November 17, 2013. Teaching Introductory Business Statistics to Undergraduates in an Era of Big Data. July 2016. Who am I and why am I talking to you? . Essential Question. What does research tell us about the causes of, and cures for, low student achievement in reading?. Tim Shanahan. “We . in education tend to have very strong beliefs. And, those beliefs can overwhelm our knowledge—or even our willingness to gain knowledge. Dr . John Hattie’s Research. Who is John Hattie?. Professor . and Director of the Melbourne . Educational . Research Institute . C. arried out the . world’s largest evidence-based study . to find out what are the factors that . jQuery. and Adv. . Javascript. j. Query. CS 380: Web Programming. CS 380. 2. Downloading and using . jQuery. . UI. or . download it. , extract its .. js.  files to your project folder. documentation available on the . th. Century. Dr. Donnelly. Elizabeth Bentley. Bentley was an American who spied on the U.S. for the Soviets from 1938 to 1945. . She defected (changed sides) to the U.S. in 1945.. She named over 80 Americans as also being spies for the Soviets.. Office of Methodological & Data Sciences. November . 13, 2015. Sarah Schwartz. www.cehs.usu.edu/research/omds. Quantitative Research. Research Question. Clear, focused & concise question that drives the study. PEP507: Research MethodsEffect Size and Statistical Power Prior to conducting the study (apriori), researchers should;estimate the size of a mean difference that is meaningfulidentify a type II error An Overview. Statistical Significance. Only tells you sample results unlikely were the null true.. Null is usually that the effect size is absolutely zero.. If power is high, the size of a significant effect could be trivial.. ‘statistically significant’ does not mean ‘important’ . IQ’s of UW undergraduates. Suppose we measured the IQ’s of 10,000 UW undergraduates and found a mean IQ of 100.3. If we were to conduct a one-tailed z-test to determine if this mean is .