Name:
ECON643: Problem Set 4
Professor Leibtag
Spring 2016
Problem Set 4, focusing on material discussed in class and in chapters 9 and 11, is due by
6:30PM on May 2nd. Please submit your responses electronically to our TA, Burak, via
ELMS and be sure to

Chapter 2
Describing Data: Numerical
Ch. 2-1
Chapter Goals
Compute and interpret the mean, median, and mode for a
set of data
Find the range, variance, standard deviation, and
coefficient of variation and know what these values mean
Apply the empirical ru

Chapter 6
Sampling and
Sampling Distributions
Ch. 6-1
Chapter Goals
After completing this chapter, you should be able to:
Describe a simple random sample and why sampling is
important
Explain the difference between descriptive and
inferential statistics

Chapter Goals
Explain how decisions are often based on incomplete
information
Key definitions:
Population vs. Sample
Parameter vs. Statistic
Descriptive vs. Inferential Statistics
Describe random sampling
Explain the difference between Descriptive and

Name: Okem Nwogu
ECON643: Problem Set 2
Professor Leibtag
Spring 2016
Problem Set 2, focusing on material discussed in class, chapters 1-6 of Newbold, Carlson,
and Thorne, and Acock chapters 1 and 4 should be submitted electronically to our TA,
Burak, via

Chapter 3
Probability
Ch. 3-1
Chapter Goals
After completing this chapter, you should be
able to:
Explain basic probability concepts and definitions
Use a Venn diagram or tree diagram to illustrate
simple probabilities
Apply common rules of probability

ECON643: Problem Set 1
Professor Leibtag
Spring 2016
Problem Set 1, focusing on material discussed in class and in chapters 1-4, should be submitted
electronically to our TA, Burak, via ELMS by 6:30PM on March 21st. Be sure to write
your name in the box a

Chapter 5
Continuous Random Variables and
Probability Distributions
Ch. 5-1
Chapter Goals
Explain the difference between a discrete and a continuous random
variable
Describe the characteristics of the uniform and normal distributions
Translate normal dist

Name:
ECON643: Problem Set 3
Professor Leibtag
Fall 2015
Problem Set 3, focusing on material discussed in class and in chapters 6, 7, and 9 of
Newbold, Carlson, and Thorne, should be submitted electronically to our TA, Burak, via
ELMS by 6:30PM on April 1

ECON643 Final Exam Practice Questions
The six questions below provide a sample of the types of questions you will be asked on the Final Exam.
In addition to these 6 questions, all of the problem set, in-class assignment, and end-of-chapter exercises
in th

Chapter 4
Discrete Random Variables and Probability
Distributions
Ch. 4-1
Chapter Goals
After completing this chapter, you should be
able to:
Interpret the mean and standard deviation for a
discrete random variable
Use the binomial probability distribut

Name:
ECON643: Problem Set 2
Professor Leibtag
Spring 2016
Problem Set 2, focusing on material discussed in class, chapters 1-6 of Newbold, Carlson,
and Thorne, and Acock chapters 1 and 4 should be submitted electronically to our TA,
Burak, via ELMS by 6:

Name: Okem Nwogu
ECON643: Problem Set 3
Professor Leibtag
Fall 2015
Problem Set 3, focusing on material discussed in class and in chapters 6, 7, and 9 of
Newbold, Carlson, and Thorne, should be submitted electronically to our TA, Burak, via
ELMS by 6:30PM

Answer Sketches for
ECON643 Final Exam Practice Questions
The answer sketches below provide the basic guidelines of how to approach each of these
questions.
1. In a random sample of 500 motor vehicle renewal registrations drawn from one county, the
county

ECON 643
Final Exam Review
Exam Details
5/16 6:45-8:45 PM
6 Short Answer/Essay Questions
5 questions to be completed in exam booklet or using your laptop
1 question to be completed using STATA and submitted using your
laptop via ELMS
Covers text, notes, l

Name: Okem Nwogu
ECON643: Problem Set 4
Professor Leibtag
Spring 2016
Problem Set 4, focusing on material discussed in class and in chapters 9 and 11, is due by
6:30PM on May 2nd. Please submit your responses electronically to our TA, Burak, via
ELMS and

use "C:\Data\Stata\lowbirth.dta", clear
set more off
numlabel _all, add
*a)
describe
/*
100 total observations.
*/
count if year=1987
/*
50 observations with the 1987 year.
*/
sum infmort
/*
Average = 9.503
*/
sum infmort if year=1987
/*
Average = 9.95.
*

Chapter 7
Estimation: Single Population
Ch. 7-1
Chapter Goals
After completing this chapter, you should be
able to:
Distinguish between a point estimate and a confidence
interval estimate
Construct and interpret a confidence interval estimate for
a single