Econ 103
UCLA, Fall 2010
Problem Set 3 Solutions by Anthony Keats and Sarolta Lacz
Part 1: True or False and explain briey why. 1. The assumption that E (ui | Xi = xi ) = 0 says that the expected value of ui changes depending on the value of Xi . FALSE. T
Econ 103
UCLA, Fall 2010
Problem Set 2
Due: Thursday, October 14 in hardcopy at the beginning of class Note: Please attach the Homework Cover Page from Classweb to the front of your homework. Part 1: True or False and explain briey why. 1. To obtain the s
Econ 103
UCLA, Fall 2010
Problem Set 2 Solutions by Joe Kuehn
Part 1: True or False and explain briey why. 1. To obtain the slope estimator using the least squares principle, we divide the sample covariance of X and Y by the sample variance of Y . False I
Econ 103
UCLA, Fall 2010
Answers to the Problem Set 1 by Dmitry Plotnikov
Part 1: True or False and explain briey why. 1. The expected value of a discrete random variable is the outcome that is most likely to occur. FALSE. The expected value of a random v
Econ 103
UCLA, Fall 2010
Problem Set 3
Due: Thursday, October 21 in hardcopy at the beginning of class Note: Please attach the Homework Cover Page from Classweb to the front of your homework. Part 1: True or False and explain briey why. 1. The assumption
Week 3 questions
Use the sample dataset (wage.dta) 1. Run a regression of wage on education (educ). 2. Interpret the slope and the intercept of the estimated regression line. 3. Is the slope coecient statistically signicant? 4. What is the predicted chang
Review of Statistics Basic concepts
Population Group of interest. Random variable variable/feature of interest (about the population). It may dier for every individual, therefore, it is called a variable and it has a distribution that can be characterize
Introduction to Stata1 This handout contains basic material that will be used during this quarter. Opening Stata Open Stata by going to Start, Programs, Stata, Intercooled Stata. You will see 4 windows: REVIEW, VARIABLES, STATA COMMAND, and STATA RESULTS.
Goodness of t Yi = Yi Yi = Yi + Yi Yi Yi Y = Yi Y + Yi Yi Square both sides, (Yi Y )2 = (Yi Y )2 + (Yi Yi )2 + 2(Yi Y )(Yi Yi ) And then sum over all of i,
n n n n
(Yi Y )2 =
i=1 i=1 n i=1 (Yi Y n
(Yi Y )2 +
i=1
(Yi Yi )2 + 2
i=1
(Yi Y )(Yi Yi )
It can
Econ 103 Stata Overview (Matthew Baird)
Introduction Stata is a command based statistical software. You can use the buttons to get most of what you want done, but this wont lend itself to repetition and using the real power of the computer A small invest