Heteroskedasticity
Richard Williams, University of Notre Dame, http:/www3.nd.edu/~rwilliam/
Last revised January 30, 2015
These notes draw heavily from Berry and Feldman, and, to a lesser extent, Allison, and Pindyck and Rubinfeld.]
What heteroskedasticit
Prof. Erdin
ECO 310
CLASS EXERCISES: UNBIASEDNESS & VARIANCE
Given
Sxy
=
Sxx
V ar(Sxy )
2
Sxx
V ar(b) =
Remark
1. : We can write
Y ) (n 1)
Sxy = Cov(X,
Sxx = V ar(X) (n 1)
Since
Sxy =
=
=
X
xi +
X
X
=
X
P
xi X
yi
n
xi yi
P
xi X
( + xi + ui )
n
xi ( +
Dummy Variable Approach for Wage Determination Process
Data 7-2
Is there gender discrimination against female salaries?
wage= dependent variable
Quantitative Variables:
educ= years of education beyond eight grade
exper= number of years at the company
age=
LM (Lagrange multiplier) Test on Non-linearities and Model
Specification
Data 4-8
sub= Subscription Rate, number of subscribers (demand for cable
TV)=Dependent Variable
home= Number of homes passed by each system
inst= installation fee
svc= monthly servic
Aizhan Borubaeva
3rd homework
Applied Econometrics
Nurgul Ukueva
1. Do-File editors commands:
clear
use "C:\Users\user\Downloads\WAGEPAN.DTA", clear
xtset nr year
xtreg lwage year hours married educ union expersq exper, fe
estimates store fixed
xtre
Applied Econometrics
2nd homework
Aizhan Borubaeva
Nurgul Ukueva
1. The first step would be to run Fixed Effects (FE) regression in Stata with given data
use "C:\Users\user\Downloads\WAGEPAN.DTA", clear
. xtreg lwage manuf exper union agric educ hours con
Chapter 1: Introduction to Human Resource Management
Chapter 1: Introduction to Human Resource Management
Multiple Choice
1.
The basic functions of management include all of the following except _.
a. planning
b. organizing
c. motivating
d. leading
e. sta
Calculus 1, Mat 103c,d
Assignment 12, final version, due Mon, April 15
Problem 1. Determine the following integrals:
a)
x sin(5x2 + 8) dx;
x
b)
dx;
9 7x2
4
c)
x2 x3 + 11 dx;
3x2 + 14x
d)
dx;
(x3 + 7x2 + 1)5
cos 3 x
e)
dx.
3
x2
Problem 2. Consider the regi
Calculus 1, Mat 103c,d
Assignment 10, final version, due Mon, April 1, by 7:20pm, right
before the Midterm in the MB Auditorium
Remark: Please staple your solution sets.
Problem 1. Draw the graphs of the following functions. In each case, nd the range of
Calculus 1, Mat 103c,d
Assignment 9, final version, due Mon, March 25
Remark: Please staple your solution sets.
Problem 1. Suppose that f (3) = 9 and for all x, we have 2 f (x) 5. What can you say about
f (10)?
Problem 2. Suppose that f (x) 4 for all x. W
Calculus 1, Mat 103c,d
Assignment 7, final version, due Wed, Feb. 27, right before the exam
Remark: Please staple your solution sets.
Problem 1. A ladder 10 ft long rests against a vertical wall. The bottom of the ladder slides away
from the wall with con
Calculus 1, Mat 103c,d
Assignment 8, final version, due Mon, March 18
Remark: Please staple your solution sets.
Problem 1. Draw a possible graph of a functionf which satises simultaneously all of the conditions
below:
a) The domain of f is the interval [0
Calculus 1, Mat 103c,d
Assignment 6, final version, due Monday, Feb. 25
Remark: Please staple your solution sets.
Problem 1. Let y = sin x.
a) Compute
dy
dx
x=/6
b) Find the equation of the tangent line to the graph of y = sin x at the point where x = /6.
Calculus 1, Mat 103c,d
Assignment 5, final version, due Monday, Feb. 18
Remark: Please staple your solution sets.
Remark: If you do the three optional problems, you can skip Problems 2,6,8,9.
Problem 1. For each of the functions below, compute the slope o
Conflict
Conflict
Conflict
Conflict
Isaprocessthatbeginswhenonepartyperceivesthat
another party has negatively affected, or is about to
negatively affect, something that the first party cares
about.
Is that point in an ongoing activity when an interacti
LEADERSHIP THEORIES
LEADERSHIP THEORIES
LEADERSHIP
A Leadership Story:
A Leadership Story:
Management is doing things right,
Management
leadership is doing the right things
leadership
(Warren Bennis and Peter Drucker)
What Is Leadership?
What Is Leadershi
COMMUNICATION
Why is communication important to
Why is communication important to
Why
business?
business?
business?
business?
Good communication matters, because business
organizations are made up of people.
As Robert Kent, former dean of Harvard Busine
What is going on todays
business world?
Overall confidence, measured as the balance of executives who think the global economy
will improve against those who expect it to worsen, rose from the subterranean minus 39 of
2012 to reach minus 11 for 2013.
The
Power
Power
&
&
Political Behavior
Political Behavior
A Definition of Power
A Definition of Power
Power
A capacity that A has to influence
the behavior of B so that B acts in
accordancewithAswishes.
Dependency
Bs relationship to A when
A possesses somethi
TEAMS
TEAMS
INTRODUCTION
Over
twenty
years
ago,
automobile
manufacturers Volvo and Toyota implemented
team-based structures at a time when highly
formalized, centralized and departmentalized
mechanistic structures were the norm.
In the 1980s, a growing
GROUPS
GROUPS
Group
2 or more individual interacting
interdependent who have come together
to achieve particular objectives.
GROUP
FORMAL
COMMAND
INFORMAL
TASK
INTEREST
FRIENDSHIP
GROUPS
FORMAL
Defined by
organizational
structure with
designated work
a
MOTIVATION THEORIES
Defining Motivation
Defining Motivation
Key Elements
Key Elements
1. Intensity:how hard a person tries
1. Intensity how hard a person tries
2.
2.
3.
3.
Direction:toward beneficial goal
Direction toward beneficial goal
Persistence: how
Perception
&
Individual Decision Making
What Is Perception?
What Is Perception?
What
Why Is It Important?
Why Is It Important?
Perception
A process by which
individuals organize and
interpret their sensory
impressions in order to
give meaning to their
env
The subsidy is an assistance that the government gives in the sector of economics or business. The aim of instituting
a subsidy may depend on who the subsidy is going to. In general, subsidy helps in the sectors of medical care for the
poor and elderly it
ECO 101b
Homework #7
Professor Kalchev
Maksim Gamzaev
What did I learn in Microeconomics?
Microeconomics was supposed to be a fundamental course for my economics major in AUBG. I
learnt a lot of beneficial economical laws and principles such as Cost-Benef