ECO 4000, Statistical Analysis for Economics and Finance Fall 2010
Lecture 3 Prof: Seyhan Arkonac, PhD
Last Lecture we talked about expected value, mean and variance. Lets remember them:
Expected Value, Mean and Variance
Let X be a random variable (say
ECO 4000, Statistical Analysis for Economics and Finance Fall 2010
Lecture 1 Prof: Seyhan Arkonac, PhD
What is Econometrics?
Why do I need to take this course? Is this a hard course? Why am I here? Will I learn any thing useful here? Will I have to study
REVIEW FOR FINAL EXAM (ECO 4000)
by
Seyhan Erden Arkonac, PhD
1
The Population Linear Regression Model general notation
Yi = 0 + 1Xi + ui, i = 1, n X is the independent variable or regressor Y is the dependent variable 0 = intercept 1 = slope ui = the reg
Department of Economics and Finance ECO 4000 (MW6) Statistical Analysis for Economics and Finance
Spring 2011
Professor: Seyhan Erden Arkonac, PhD [email protected] Office hours: Immediately after each class I answer short questions in class room, if
Practice Midterm Exam for ECO 4000
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Analyzing the behavior of unemployment rates across U.S. states in March of 2002 is an example of using A) cross-
Prof. Piskula
Second Manual Regression Worksheet
First, a reminder for those using an Apple-operating system version of excel. It is worth
searching via the excel search function for Analysis Toolpak (note the spelling). You may be
directed how to add in
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
MBA34
Managerial Excellence 1 Term
Business cycles and stabilization policies Class 17
The firm and its environment
Copyright SDA Bocconi 2004
Francesco Giavazzi
1
Class outline
Definitions
Facts
Scope for stabilization policies
Copyright SDA Bocconi 2
Writing in Economics: Components of a Research Paper
An economics research paper includes the parts listed below. Some of these may be, and
often are, combined into sections of the research paper. Depending on the nature of the
research question, some par
Unemployment and
Okuns Law
Determining Unemployment
The unemployed are searching for/available for work (4 weeks)
Employed + Unemployed = Labor force
Labor force participation rate =
Labor force X 100
Population 16 or older
Unemployment rate:
Number of un
Eco 4000, Prof. Piskula
Quiz 2 Practice
Actual Quiz 9/30/16
Name:_
1. Following the form in the Stock and Watson textbook (Appendix 2.1, derivation of equation
2.31), write the expression for var(aX+bY) that makes use of the definition of variance and the
Eco 4000, Prof. Piskula
Quiz 2 Practice
Actual Quiz 9/30/16
Name:_
1. Following the form in the Stock and Watson textbook (Appendix 2.1, derivation of equation
2.31), write the expression for var(aX+bY) that makes use of the definition of variance and the
Lecture notes on Nov 21st, 2016
I. Omitted Variable vs. Irrelevant Variable
Suppose we have a true population model
y 0 1 x1 2 x2 k xk u
If we write down the models as
y 0 1 x1 2 x2 k 1 xk 1 u '
y 0 1 x1 2 x2 k 1 xk 1 u ' '
There is an omitted variable
Eco 4000, Prof. Piskula
Quiz 1 Practice Solutions
Actual Quiz 9/9/16
Name:_
1. List the 4 measurement scales discussed in class (not in the book) and say a few words about
each.
Nominal numbers as names
Ordinal numbers give order
Interval differences betw
11/13/2016
Hypothesis Testing in Multivariate
Regression
I. Test of Individual Significance
Test of Individual Significance
Tests of Overall Significance (always two sided)
Tests of Subsets of Regressors (tests of restrictions
on several of the slope coe
Homework 5
Economics 4400w
Due in the class on Dec 12, 2016
The following Excel output is for 89 makes of cars manufactured in the U.S. Given the
descriptive statistics it should be possible to figure out the units of measurement. MPG is
miles per gallon.
Brooklyn College
Economics Department
Economics 4400w
Chun Wang
Fall 2016
Key to Midterm 2
Part 1: Multiple Choices Questions
1. Suppose we create three dummy variables, D1 = 1 if less than high school graduate (and =
0 otherwise), D2 = 1 if high school g
Exercise#1
Convention in the true or false statements: if a statement is
alwaystrue,thenitisatruestatement.Ifastatementisalways
false,thenitisafalsestatement.Ifastatementistrueonly
insomecases,thenwesayitisafalsestatement.Forexample,
thestatement:ABaruchs
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?
Gi
ECO 4000 Spring 2016 Midterm Exam
Guillaume Haeringer
1. We consider the regression model y = 0 + 1 x + u and we find b0 = 2.3 and b1 = 1.2
A increase of 10 units of x1 means that y will
(A) decrease by 1.2
(B) CORRECT decrease by 12
(C) increase by 12
(D
We consider a data set with the following variables:
ed = number of years of education
female = 1 if the individual is a female, 0 otherwise
black = 1 if the individual is a black, 0 otherwise
hispanic = 1 if the individual is a black, 0 otherwise
by
ECO 4000 Spring 2016 Midterm Exam
Guillaume Haeringer
1. We consider the regression model y = 0 + 1 x + u and we find b0 = 2.3 and b1 = 1.2
A increase of 10 units of x1 means that y will
(A) decrease by 1.2
(B) decrease by 12
(C) increase by 12
(D) decrea
R version 3.0.2 (2013-09-25) - "Frisbee Sailing"
Copyright (C) 2013 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin10.8.0 (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under
Exercise #3
Convention: if a question is about the linear model, then the notation X with or
without subscript, stands for a fixed number. If the question is NOT about the
linear model, i.e., the term linear model is not in the question, then X stands for
EXAMPLE: SAME DISTRIBTION AS THE PREVIOUS
EXAMPLE (THE ONE IN THE FILE 4000.N.5)
FROM THE DISTRIBUTION OF X, WE CAN FIGURE OUT
THE DISTRIBUTION OF ( X E(X) AND ( X E(X)2.
1 0.25
0.5
0 0.25
0.25
- 1 0.25
0.25
(X E(X) = X 0.25 =
(X 0.75)2 =
0.752
0.5
0.252
DEFINITION OF COVARIANCE BETWEEN TWO
RANDOM VARIABLES:
COV (X1 , X2 ) E ( (X1 - E(X1)*(X2 - E(X2) )
TO UNDERSTAND WHY THE ABOVE IS A
MEASUREMENT OF CORRELATION, THINK ABOUT
THE FOLLOWING ARGUMENT:
IF THE TWO RANDOM VARIABLES MOVE IN THE
SAME DIRECTION, IT
SAMPLE Final Questions
NOTE: These questions are meant only to provide insight into the types of questions that
could be posed. These are not the exact questions you should expect on the Midterm Exam.
Any top
SAMPLE Midterm Answers
NOTE: These questions are meant only to provide insight into the types of questions that
could be posed. These are not the exact questions you should expect on the Midterm Exam.
Any
SAMPLE Midterm Questions
NOTE: These questions are meant only to provide insight into the types of questions that
could be posed. These are not the exact questions you should expect on the Midterm Exam.
Any t
SAMPLE Final Answers
NOTE: These questions are meant only to provide insight into the types of questions that
could be posed. These are not the exact questions you should expect on the Midterm Exam.
Any to