Spring 2017
Baruch College
Econometrics ECO4000 - ETR
Professor Erin Crockett
Name:_
Test Version: C
Midterm Exam
Multiple Choice
On the scan-tron sheet provided, please use a #2 pencil to identify
A scenario
You
You design
design websites
websites for
for local
local businesses.
businesses.
You
You charge
charge $200
$200 per
per website,
website, and
and currently
currently sell
sell
12
12 websites
websites per
per month.
month.
You
You are
are th
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PhD, the University of Arizona
Major: Management Information Systems
Minor: Computational Linguistics, Econometrics
MS
Information Technology, the University of Central Missouri
Mechanical Engineering, Ireland
Wiki Page on Blackboard
How to access
Markets and Competition
A market is any group of participants who have
the desire and ability to trade with each other.
We will consider markets that can be divided into
buyers and sellers, although in some real world
markets a participant may play both
INTRODUCTION
1. (NARROW) DEFINITION OF ECONOMETRICS: A
SUBJECT ABOUT ESTIMATING QUANTITATIVE
RELATIONSHIP BETWEEN VARIABLES IN ECON AND
FINANCE.
EXAMPLE: TWO VARIABLES: X AND Y; WHAT IS THE
RELATIONSHIP? IF X GOES UP BY 1 UNIT, WHAT IS
THE CHANGE IN Y?
2.
REVIEW OF PROBABILITY AND STATISTICAL
CONCEPTS
RANDOM VARIABLE (can be regarded as a device to
represent uncertainty): WHEN THE OUTCOME OF A
RANDOM EXPERIMENT (UNCERTAINTY) IS
NUMERICAL IN VALUE (ITS A NUMBER), A RANDOM
VARIABLE IS A VARIABLE WITH THE OUT
PROBABILITY DISTRIBUTION (SAMPLING
DISTRIBUTION) OF A RANDOM VARIABLE, X:
MEANING OF PROBABILITY (OF AN EVENT): HOW
OFTEN IT HAPPENS OVER MANY, MANY SAMPLES? IN
OTHER WORDS, THE (RELATIVE) FREQUENCY OF
OCCURRENCE (OF THE EVENT). [FOR EXAMPLE, THE
PROBABIL
EXAMPLE:
1
0
0.25
-1
X =
1/2
0.25
E(X) = 1*1/2 + 0*0.25 + (-1)*0.25 = 0.25.
NOTE THAT A DIFFERENT PROBABILITY
DISTRIBUTION WILL PRODUCE A DIFFERENT VALUE
OF E(X).
A FEW THINGS TO REMEMBER ABOUT E(X):
- E(X) IS A FIXED NUMBER. ITS VALUE IS THE
SAME REGARDL
Assignment 1
Due September 13 (Wednesday), 11:59 PM
Assignment 2
Will be released 11:59 PM today
Due date is on September 13(Wednesday) at 11:59 PM
September 15, 1-2:00 PM
Online: you can use any materials you have.
Note:
Making sure that you can log onto
IDENTIFYING
COMPETITIVE
ADVANTAGES
CHAPTER TWO
Assignment 1 will be released tonight and due on September
15.
Connect Assignment
Clicker
50 student registered
The registered number should be mixed 6 digits or letters.
E.g., 45ET1G
Library circulation desk
Estimators, OLS, and its Assumptions
1. Estimator Analysis
Confidence Interval
Because of random sampling error, we cannot determine the exact value of the population mean
of Y using only our related sample. However, through probability we can construct a
PhD, the University of Arizona
Major: Management Information Systems
Minor: Computational Linguistics, Econometrics
MS
Information Technology, the University of Central Missouri
Mechanical Engineering, Ireland
Wiki Page on Blackboard
How to access it
Cour
Reading Journal Assignment
ENG 2850
Description:
This semester, each student will be responsible for keeping a reading journal that documents
their encounters with our readings. As we consume literature, we expand our horizons and make
connections between
1. Go to this website: http:/www.cengagebrain.com/course/2006033, where you will pay
$73.00 for a softcover custom textbook and instant access to MindTap, an online platform.
(Please be sure to include your apartment number when filling in your address.)
Clicker Registration Guidline
1. Renting the device
Go to Baruch library circulation desk with the following information to rent a device:
Your class
CIS 2200
Section
MNFA
Class number 30293
Press any button.
If the light is not flashing the battery is
Connect Card Registration Process (or sign up for two week courtesy access)
It is helpful to watch the following two tutorials to get started with CONNECT.
https:/www.youtube.com/watch?v=Gy-vN0TNnI4
Use the following link to learn more about CONNECT:
http
Lakoff 1
ENG 2850 Great Works of Literature II JMWD
Jeremy Lakoff, Department of English, Baruch College
Course Information
Semester: Fall 2017
Classroom: B - Vert 9-155
Meeting Time: 12:25-2:05
Course Description
Professor Information
Office: 7-290F
Offi
CIS 2200 - INTRODUCTION TO INFORMATION SYSTEMS AND TECHNOLOGIES
Zicklin School of Business Baruch College CUNY
Instructor: Prof. Qiang (David) Gao
Dept of Computer Information Systems
E-Mail: [email protected]
Phone: 646-312-3192
Office: VC 11-271
SOME IMMEDIATE CONSEQUENCES OF THE
ASSUMPTIONS:
E( Y ) = B1 + B2*X . WHY?
V(Y) = V(u) . WHY?
V(u) = E(u2). WHY?
ESTIMATION OF THE Bs IN THE LINEAR MODEL:
1. GENERAL CONCEPTS:
ESTIMATOR: ANY FORMULA THAT
PROVIDES AN ESTIMATE IS CALLED AN
ESTIMATOR.
ESTIM