PPT-Variables, Variables, Everywhere

1 Walter F Blood Director of Product Management Agenda 2 Variables A Quick Review Variables in Reports Variables in Procedures Variables in Masters A Quick Review 3 The Basics 4 Two types of Variable. They may be explanatory or outcome variables however the focus of this article is explanatory or independent variable construction and usage Typically dummy variables are used in the following applications time series analysis with seasonality or re 2-Stage . and 3-Stage Least . Squares Regression of a Linear Systems of Equations. 2009 LPGA Performance Statistics and Prize Winnings. www.lpga.com. S.J. Callan and J.M. Thomas (2007). “Modeling the Determinants of a Professional Golfer’s Tournament Earnings,” Journal of Sports Economics, Vol. 8, No. 4, pp. 394-411. Causes. (More Theory than Applied). . Peter Spirtes, Erich . Kummerfeld. , Richard Scheines, Joe Ramsey. 1. An example. Person 1. Stress. Depression. 3. Religious Coping. Task: learn causal model. By. Shyam. . Gurram. Variables. Variables: There are certain rules for variables. A variable starts with the $ sign, followed by the name of the variable. A variable name must start with a letter or the underscore character. Gage Data, . and WREG. Regional . analysis . in the . Levisa. fork and Tug fork basins. Carey Johnson, KY Division of Water. State CTP Lead. Has led Kentucky through . MapMod. for all 120 counties in the Commonwealth. 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.. Independent Variable. Caffeine. Timeof. day. . influences. Dependent Variable. Number. of words recalled. Tea/. Coffee. Noise. Extraneous. Variables. 2 Conditions. Independent Variable. Caffeine. Designing Investigations. 3 Kinds of Variables. Independent Variable – something that is changed by the scientist. What is tested. What is manipulated. 3 Kinds of Variables. Dependent Variable – something that might be affected by the change in the independent variable. Variables start with lower case letter. Variables are descriptive of what they store . Variables are one word . Use camel case is two . myRate. ; . Data types - specifies the kind of data you are storing. 1. Outline:. The contingency table. Independence and dependence. Hypothesis test for independence. The chi-square distribution. The “expected” table. The test statistic. Worked example. Categorical variables. • State-space representation.. • Linear state-space equations.. • Nonlinear state-space equations.. • Linearization of state-space equations.. 2. Input-output Description. The description is valid for. 2-Stage . and 3-Stage Least . Squares Regression of a Linear Systems of Equations. 2009 LPGA Performance Statistics and Prize Winnings. www.lpga.com. S.J. Callan and J.M. Thomas (2007). “Modeling the Determinants of a Professional Golfer’s Tournament Earnings,” Journal of Sports Economics, Vol. 8, No. 4, pp. 394-411. Independent Variable. Caffeine. Timeof. day. . influences. Dependent Variable. Number. of words recalled. Tea/. Coffee. Noise. Extraneous. Variables. 2 Conditions. Independent Variable. Caffeine. 2-Stage . and 3-Stage Least . Squares Regression of a Linear Systems of Equations. 2009 LPGA Performance Statistics and Prize Winnings. www.lpga.com. S.J. Callan and J.M. Thomas (2007). “Modeling the Determinants of a Professional Golfer’s Tournament Earnings,” Journal of Sports Economics, Vol. 8, No. 4, pp. 394-411.