Does a Higher Personal Income Lead to a Longer, Better Life?
A study on the effects of per capita GDP, Health Expenditure, Tertiary Education Attainment,
Poverty Rate, and Pollution Rate on overall li
Chapter-11
Introduction to Hypothesis Testing
Introduction - what is hypothesis testing? (11.1)
Four steps of hypothesis testing. (11.2)
Hypothesis tests for when population is normal
and populatio
Chapter - 12
12.3: Inference about a Population
Proportion
Introduction
We are now going to shift our focus to population of nominal or
categorical data.
In this case, numbers are arbitrarily assigned
ECN-423
Quiz- III (35 points)
Answer Key
This assignment has two parts: STATA assignment and the written assignment.
a) STATA assignment: Collect all the STATA output (whenever it is applicable) in on
Multi-collinearity
Multiple Linear Regression
Multicollinearity
I.
II.
III.
IV.
The Nature of the Problem
Consequences
Diagnosis
Remedies
I. The Nature of the Problem
Y (Exam Score) = 0 + 1X1Student P
Homework for Test 1 Material
Please answer the following and submit your answers by Blackboard on MUONline:
Chapter 2:
#1 a-i
#3 a-e
#4 a-c
Chapter 3:
#1 a-d
#4 a
Extra Problem
You do not need to turn
Proposal Outline
ECN 423 Group Project - Multiple-Linear Regression
Due Date: Tuesday, October 31st
Total: 15 points
Write a short paper (typed minimum 1 page, maximum 2) containing the sections detai
1
ECN- 423 EXAM-II Study Guide
Exam-2: Date: 11/09 (Thursday) in class
Content: Chapters 8.4, 12.1, 12.3, 16, 17
Exam Tips:
Make sure you go through the chapter handouts, the HW assignment & quiz ver
ECN-423
Final-HW Assignment (25 points)
Answer Key
(For questions 1-4, circle the correct answer)
1. In explaining students' test scores, which of the following independent variables would not best be
Chapter-17
Multiple Linear Regression
I. Theoretical Model
Research question
Contains parameters
Burden of causation is upon the researcher
Example: Y(salary) = 0 + 1X1(Education) + 2X2(GPA) +
3X3(
Chapter-16- Part-II
Simple Linear Regression
I. Theoretical Model
Research question
Contains parameters
Burden of causation is upon the researcher
Example:
II) Collect a sample from the
population
1
ECN- 423 Final EXAM Study Guide
Final Exam Date: December 9th (Tuesday) in class
Time: 4:00 p.m. 6:00 p.m.
Extended Office Hours: to be announced later
Exam Tips:
Make sure you go through the chapt
1
ECN- 423 EXAM-II Study Guide
Exam-2 : Date: 11/13 (Thursday) in class
Content: Chapters 11.2, 12.3, 16, 17 & 18.1
Exam Tips:
Make sure you go through the chapter handouts, the HW assignment & quiz
1
ECN- 423 EXAM-I Study Guide
Exam-1 : Date: 10/02 (Thursday) in class
Content: Chapters 8, 9, 11, 12.1 (& 8.4)
Exam Tips:
Make sure you go through the chapter handouts, the HW assignment & quiz very
Chapter-18
Nominal Independent Variables Application of Dummy
Variables
Interval Variables
Quantitative in nature.
Values can be measured numerically
We can calculate descriptive statistics for the
ECN-423 Assignment- II (25 points) Answer key
Due Date: October 24th (Thursday) in class
Section 1 Multiple Choice Questions (1 point each). Choose the BEST response to each question.
Make sure to fil
Chapter 9
Sampling Distributions
A sampling distribution is created by, as the
name suggests, sampling.
Case-I
Assume that the population average earnings of a Marshall University
graduate is $800/wee
Chapter 11.2
Introduction to Hypothesis
Testing : p-value method
Introduction
Example: Is the sample mean of $178
sufficiently greater than $170 to allow us to
confidently infer that the population me
Chapter 12
Inference About a population
Inference about a population mean when the
standard deviation is unknown (12.1)
Student t distribution (8.4)
(Sections 12.1 & 8.4 are both covered in Exam-I)
Chapter 16
Simple Linear Regression and
Correlation
Introduction
Q.) How does X (or Xs) affect Y?
A)
B)
C)
Examples:
1) What affects graduation rates in universities/colleges?
2)What are the factors t
Basic Statistical Ideas
Chapter 8
13-1
Different Usage of Statistics
1) Descriptive Statistics
organizing, summarizing, and presenting
data in a convenient and informative way.
e.g. , 2
2) Inferenti
ECN-423
Final- Quiz (25 points)
Answer Key
Question: Life Insurance companies are keenly interested in predicting how long their customers will
live, because their premiums and profitability depend on