What is a construct?
Abstract idea that we need to represent in our research e.g. social status,
intelligence, development
You cannot literally put your finger on these to measure them so you need to find
concrete representations that approximate what
Multiple regression continued
When you write up the results of a regression analysis in a report always provide the
standard errors below the parameter estimates. And specify the r2 value (R2 Adjusted For
multiple regression)
You may also choose to incl
Exam Practice Questions
Q1
It is claimed that a new treatment for prolonging the lives of cancer patients is more effective
than the standard one. The mean survival period for patients on the standard treatment is 4.3
years. The new treatment is administe
Extra Practice Questions
October 7th 2013
SECTION A. MULTIPLE CHOICE
Multiple Choice Instructions:
Circle the correct answer from each of the following. A negative grading system applies. This
means that each correct answer will score +4 points. Each inco
Part A
You are doing research on deadly communal riots in India. You speculate that the competence
and integrity of police forces varies across Indian states. Your theoretical argument suggests that
larger states (by population) will tend to have more tro
Hypothesis tests
A. Hypothesis testing when is assumed to be known
Example 1
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures
the motivation, attitude toward school, and study habits of students. Scores range from 0
to
Regression line:
The regression line for this example is:
Y=11. 42 +9.23x
This says that:
a.) if there was no exposure, mortality would be 114.72 per 100,000
b.) mortality increases by 9.23 per 100,000 for each unit of exposure.
BUT how certain are we of
Confidence interval
How do we summarize the uncertainty associated with our estimate? One valuable
approach is to construct a confidence interval.
Intuitively, you have been exposed to confidence intervals many times, whenever you
hear a poll result rep
Continual of week 2 class material:
Week 3:
Probability sample allows computation of standard errors, convenience sample does not
Burden is always to explain why a probability sample could not be carried out
Absence of a sampling frame
Poor access to
Unit of analysis:
Tells us the level at which the sample was taken
Examples of units of analysis are:
Individuals
Households
Companies
States
Be wary of studies that draw conclusions for a unit that is based on a sample using a
different unit of an
What is the probability it will rain tomorrow?
What is the probability someone in this class will be president?
. What is the probability someone in this class will be a senator?
What is the probability that a head will be face up when a coin is flipp
The conditional probability of an event B in relationship to event A is the probability that
event B occurs given that event A has already occurred. The notation for conditional
probability is: P(B|A)
The probability that the second event B occurs given
2 Variables
The relationship between two quantitative variables can be evaluated in terms of
Direction
Size
Strength
Scatterplots give us a visual representation all of these
The regression line summarizes the first two: direction and size of a rela
Outliers:
Are indicated on a box plot diagram by a *.
To determine if an observation is an outlier in a box plot:
Outlier high: any x such that x>Q3+1.5*IQR
Outlier low: any x such that x<Q1-1.5*IQR
Standard deviation
Is the most commonly reported me
Part A
You are doing research on deadly communal riots in India. You speculate that the competence
and integrity of police forces varies across Indian states. Your theoretical argument suggests that
larger states (by population) will tend to have more tro
Midterm Practice Questions
MPP 603
October, 2013
SECTION A
MULTIPLE CHOICE
Select only one answer to the following questions. Indicate your response by circling the letter
corresponding to the correct answer. The following grading scheme is applied: each
MPP 603 Methods for Policy Analysis
November 20, 2013
Quiz 4
STUDENT NAME: _
Quiz Instructions:
You have 1 hour to complete this exam. Test conditions apply. You may not communicate with
anyone. You may use a calculator. A formula sheet and Z-tables are a
MPP 603
Methods for Policy Analysis
November 11, 2013
Quiz 3
Student Name: _
Quiz Instructions: You have 45 minutes to complete this quiz. Answer as many questions as
you can in the allotted time. If you finish with time to spare you may leave the room bu
MPP 603 Methods for Policy Analysis
November 20, 2013
Quiz 5
STUDENT NAME: _
Quiz Instructions:
You have 1 hour to complete this exam. Test conditions apply. You may not communicate with
anyone. You may use a calculator. A formula sheet and Z-tables are a
MPP 603
September, 2013
Summation Notation
Worked Examples
Due: September 11, 2013
You may submit a handwritten hard copy or an electronic copy (whichever is easier for
you).
I)
Provide the computational (not numerical) solution for the following problems
MPP 603
Take Home Midterm
October 2012
Submission instructions: This midterm is due by 4 pm on Friday (i.e., midnight). Please
submit your midterm as a HARD COPY. Drop it into the box marked Take Home
Midterm on Marie Ann Thalers desk.
Other instructions:
Worked Examples
Solutions
I)
Provide the computational (not numerical) solution for the following problems:
5
1.)
x
i =1
6
2.)
x
i =1
= x1 + x2 + x3 + x4 + x5
i
2
= x12 + x22 + x32 + x42 + x52+ x62
i
4
3.)
10( x
i =1
II)
i
+ y i ) = 10(x1 + y1)+ 10(x2 + y
Methods for Policy Analysis
Quiz 2 SOLUTIONS
October 9, 2013
Any comments highlighted in green are comments I have included for Jordan Sandler as a
guide to grading. Ignore these comments (unless, of course, you are Jordan Sandler).
Student Name: _
Quiz i
MPP 603 Methods for Policy Analysis
Quiz 1: Wednesday September 11, 2013
Student Name: _
Instructions: You may not communicate with anyone. You may leave early, but
please leave your paper (face down) on your desk. If you need more space for an
answer, yo
MPP603
Fall 2013
Midterm In-Class Exam
You have 1 hour 50 minutes to complete this exam. Exam conditions apply. You may not talk
with each other. If you finish early you may leave the room, but please leave your paper face
down on your desk or hand it to
MPP603 Fall 2013
Final Exam Practice
Question 1
An insurance company will pay $400 to replace a stolen 32-inch television that was lost due to
theft. The insurance company charges $25/year for this policy. The insurance company has
determined that the pro
MPP 603
Normal Distribution Practice Questions
Question 1
The length of human pregnancies from conception to birth varies according to a
distribution that is approximately normal with mean 266 days and standard deviation 16
days. Answer the following ques
Practice Question from 2009 final exam
You are conducting research on birth rates. Using data on 23 countries from the United Nations,
you run a regression on birth rate (number of births per 1000 population) on women's economic
activity, womens literacy
1.
The daily milk production of Guernsey cows is approximately normally distributed with a
mean of 35 kg/day and a known standard deviation of 6 kg/day. The probability that a days
production for a single animal will be less than 28 kg. is approximately:
Solution to in class problem (missile defense system)
a.)
If any of the four interceptors hit the incoming warhead it is destroyed.
Let W = Incoming warhead is destroyed.
P(W) = 1 P(All interceptors fail)
You are told the probability of a hit for any part