Dummy variables a dummy variable is a variable that takes on the value l or o Examples: male(= 1 if are male, O otherwise), south(=l if in the south, 0 otherwise), etc dummy variables are also called binar variables. for obvious reasons Economics 20- Prof anderson

Assumptions of the classical Linear Model (Clm) e So far, we know that given the Gauss Markov assumptions, OLS IS BLUE e In order to do classical hypothesis testing we need to add another assumption(beyond the Gauss-Markov assumptions) Assume that u is independent of x,x2…,xk and u is normally distributed with zero mean and variance 0: u- Normal(0, 02) Economics 20- Prof anderson

Some Terminology o In the simple linear regression model where y=Bo+ Bx+ u, we typically refer to y as the a Dependent variable, or a Left-Hand Side Variable. or Explained variable, or Regressand

Chapter 10 Microbial Ecology 10.1 Microorganisms in nature ecosystem 10.2 Microbial population interactions 10.3 Biogeochemical cycles 10.4 Plant-microbe interactions 10.5 Bioremediation

Microbial growth Conditions 1. Macronutrients 2. Micronutrients 3. Growth factors 4. Environmental factors: temperature; pH; Oxygen et al Nutrient requirements Microorganisms require a bout ten elements in large quantities, bec

1 Physics as Natural Philosophy Physics is one of the liberal arts, combining elements of reason, philosophy, mathematics, language, and rhetoric. The term natural philosophy reflects the creative and dynamic interplay that exists in physics among experiment, theory, logic, insight, inspiration, symmetry, beauty, and language

(1)i(p, u) is zero homogeneous in p (2) substitution matrix: Dpi(p, u)<0 (3)symmetric cross-price effects: 23i(p 2=2z(p, u) (4) decreasing:=n≤0

Unit 4 The american character i I Objective Aware of the fac tors that cause America' s diversity in life pattern Figuring out a general pattern of American personality Learning about Newspaper lead

Unit 10 The Credibility Principle? I Objective Understanding what \credibility\ is in all kinds of social life Understanding why credibility principle should be followed and cherished Reading skill: Reading advertisement Ⅱ Time Arrangement

Man-Machine Systems 105.2 Several Natures of Man-Machine Control-A Catalog of Behavioral Complexities 105.3 Full-Attention Compensatory Operations--The Crossover model Crossover Frequency for Full-Attention Operations. Remnant Duane Mcruer Effects of Changes in the Task Variables. Effects of Divided 105.1 Introduction