Validity Definitions Extent to which a test measures what it purports to measure Extent to which a test is used in an impartial, just, and equitable way Validity is what the test measures and how well it does so (Anastasi, 1954)
By JasminFlorianTOPIC 6 Putting the Economy Together: A Review (Mostly) The Money Market (Market 1): Money Supply Nominal Money Supply (M s ) : Affected By the Fed Fed conducts monetary policy to increase Money Supply - Open Market Operations - Decrease the reserve ratio
By GabrielReasons why Economists Disagree (from Gregory Mankiw ). Differences in Scientific Judgments Example: Is it better to tax income or consumption? Differences in Values Example: Should we focus on growth or equity? Charlatans and Cranks (Mankiw’s words)
By LionelDaleSpecies Abundance and Diversity. Chapter 16. Introduction. Community : Association of interacting species inhabiting some defined area. Community Structure includes attributes such as number of species, relative species abundance, and species diversity.
By oshinElasticity. Claudia Garcia-Szekely. 150. 120. A movement Along. 100. A change in price. 50. 30. D. 0. 10. 20. 0. 6. 24. 30. A change in quantity demanded. Consumers barely notice. Consumers Overreact. 110. 110. Small change in Q. 100. 100. Big change in Q. 100. 130. 100.
By gitaThis is a PowerPoint presentation on fundamental math tools that are useful in principles of economics. A left mouse click or the enter key will add an element to a slide or move you to the next slide. The backspace key will take you back one element or slide.
By kayleeYou found an interaction! Now what?. A practical guide to graphing & probing significant interactions Design and Statistical Analysis Lab Colloquium Laura J. Sherman umdconsulting@gmail.com. Bauer & Curran (2005). Interaction/Moderation. X and Z interact to predict Y
By hanleyFinance, Inequality and Poverty: Cross-Country Evidence. Thorsten Beck, Asli Demirguc-Kunt and Ross Levine. Motivation. High levels of income inequality and poverty around the world In 2001, 1.1 billion lived on less than one dollar a day
By mavisThe AS-AD model. From the short run to the medium run. In the short run prices are either sticky (non moving) or adjusting very slowly. We can say that their adjustment is sluggish. Output can be above or below its natural level.
By wakandaTC 310 May 15, 2008. Economics of Telecom. Discussion Point. Which serves telecom customers better? Free Market? Regulated Market? Does this apply to Horizontal, Vertical, or both markets?. Network Effects. Value based on Number of Users Tipping Point AKA Critical Mass
By chloeCorrelation. Correlation. T-tests and ANOVA examine the mean differences between two + levels of one or more IV’s on a DV i.e. differences between males and females (2 levels of the IV “gender”) on exam scores
By JasminFlorianChapter 14. Association Between Variables Measured at the Ordinal Level. Chapter Outline. Introduction Proportional Reduction in Error (PRE) The Computation of Gamma Determining the Direction of Relationships. Chapter Outline.
By havynChapter 7 -Part 1 . Correlation. Correlation Topics. Correlational research – what is it and how do you do “co-relational” research? The three questions: Is it a linear or curvilinear correlation? Is it a positive or negative relationship? How strong is the relationship?
By hayesRisk and Return – Part 2. For 9.220, Term 1, 2002/03 02_Lecture13.ppt Instructor Version. Outline. Introduction Looking forward Ex ante expectation, standard deviation, correlation coefficient, and covariance of returns Portfolios Portfolio weights Short selling Expected returns
By clarkPoisson & Negative Binomial Regression “Now I've got heartaches by the number, Troubles by the score, Every day you love me less, Each day I love you more” (Ray Price). Count Variables. Number of times a particular event occurs to each case, usually within a given:
By teneilBirth Order/Family Size & Intelligence Debate. Keri-Ann Ritcey November 17, 2005. What is this debate?. Does one’s birth order and family size have an effect on their intelligence? . Why is this debate of interest??. Everybody has a birth order
By trentBANK LIQUIDITY CREATION, FINANCIAL CRISES, AND POLICY ACTIONS. Allen N. Berger University of South Carolina Wharton Financial Institutions Center CentER , Tilburg University Presentation at the Southern Finance Association Meetings Key West, November 2011 .
By laddieRisk-taking behavior and bank charter value of listed banks: An empirical study in China. Yanping Li , Liyan Han School of Economics & management, Beihang University,Beijing,100083,China E-mail address: happyping123@163.com. Introduction.
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