Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #2
Due Thursday 6/10/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
plac
Stats Home Notes: Ch.3 Probability
Probability = limiting relative frequency
Pr = lim (f/n)
Probability Models
AThe Value of a Model
 Use thought experiment of mathematical model
BThe Three Model
 Draw paths, from beginning to end, which represent a c
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #9
Due Monday 6/28/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
place
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #10
Due Wednesday 6/30/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
pl
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #8
Due Wednesday 6/23/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
pla
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #6
Due Monday 6/21/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
place
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #1
Due Wednesday 6/10/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
pla
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #4
Due Monday 6/14/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
place
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #5
Due Thursday 6/17/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
plac
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #3
Due Friday 6/11/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
place
Professor Joyce Jacobsen
Economics 300
Summer 2010
July 2, 2010
Essay Questions for Final Exam
Two of the following six questions will be randomly selected for the final exam. You should allocate about
thirty minutes of exam time to answering each questio
Michael DeLalio
Economics 300
12/6/2012
The Business Determinants of Winning in Major League Baseball
I examined the relationship between wins and business operations for teams in Major
League Baseball. In short, I wanted to see if a successful business o
Economics 30002
Quantitative Methods in Economics
Spring 2014
Tuesday and Thursday 9:00am10:20am in PAC 125
Professor:
Anthony Keats
Office:
210 PAC
Email:
[email protected]
Phone:
8606852425
Office Hours: Tuesday and Thursday 10:30 am  12:00 pm, an
Economics 300 / Keats
Problem Set 2 (due start of class Tuesday, Feb. 11)
1.
2.
Of the Wesleyan class of 2014, 33% of students are from the MidAtlantic
region and 53% of students attended public school. 1 Lets assume that 19% of
students are from the Mid
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #11
Due Thursday 7/1/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
plac
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #12
Due Friday 7/2/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
place
Professor Joyce Jacobsen
Economics 300
Summer 2010
Assignment #7
Due Tuesday 6/22/10 by 6 p.m. in the Econ 300/QAC201 slot in the Economics Alcove
Please show the calculations used to arrive at your answers. Round final answers to the second decimal
place
STATS Home Notes: Ch.2
Descriptive Statistics

Primary purpose of statistics: to make an inference from a sample to the whole
population
Sample must be simplified and reduced to a few descriptive numbers, called
sample statistics
Frequency Tables and Gra
Econ 300 Class 2.27
Random Sampling

Sample means and variances are random variables when you get data for a
project or from a paper, thats a sample
Xbar and s2  can have more than one sample and comparing each  eventually
combine them
With different s
Relationship Between Contract Status and
Performance in MLB Players
Andrew Hove
Wesleyan University, Economics 300
I. Introduction
Major League Baseball (MLB) players are under constant scrutiny and speculation
based on a multitude of individual statistic
Stats Home Notes: Ch.7
Point Estimation
Populations and Samples
 Population mean and variance are constants  called population parameters
 Sample mean and sample variance are random variables
Efficiency of Unbiased Estimators
AUnbiased Estimators
 Th
Stats Home Notes: Ch.4 1.30 Probability Distributions
Discrete Random Variables
AProbability Distributions
 A discrete random variable takes on various values x with probabilities specified
by its probability distribution p(x)
BA More Rigorous Treatmen
Stats Home Notes: Ch.9 3.27.13
Hypothesis Testing Using Confidence Intervals
AA Modern Approach
 Statistical hypothesis is a claim about a population that can be put to a test by
drawing a random sample
 Any hypothesis that lies outside the confidence
Stats Home Notes: Ch.5 2.5.13
Two Random Variables
Distributions
AJoint Distributions
 Joint (or bivariate) probability distribution of X and Y
 Formal definition of the joint probability distribution is:
o P(x,y) = Pr(X=x and Y=y)
BMarginal Distribut
Stats Home Notes: Ch.6
Sampling
Random Sampling
AThe Population
 The total collection of objects of people being studied, from which a sample is to
be drawn
o Can be any size
 Each individual observation in a random sample has the population probabilit
Stats Home Notes: Ch.8
Confidence Intervals
A Single Mean
ATheory  mu = Xbar + 1.96 omega/sq.root n
 mu=Xbar + sampling error
 How wide must this allowance for sampling error be? depends on how much
Xbar fluctuates
 Common to choose 95% confidence
o
Formulas
Mean Squared Error (MSE)
MSE = V ar (U ) + [E (U ) ]2
Single mean condence interval
= X z n
2
or
s
= X t n
2
Dierence in two means condence interval (independent samples, population variances known)
2
1
n1
(1 2 ) = X 1 X 2 z
2
+
2
2
n2
Dierenc
Econ 300
Spring 2013
February 25, 2012
Midterm Examination I
1. Write your answers on the test; continue your answers on the back if additional space is
needed.
2. Each of the seven questions is worth the same amount ten points but the questions
vary in t
ECON 300
Midterm I  Solutions
1. Concepts. Please dene the following concepts we have discussed in class. Provide examples when possible. Your answers should be short (34 sentences) but also complete.
(a) There are 4 types of bias/error that can occur w