Homework 3
Due February 24, 2011
1.
A student wonders if people of similar heights tend to date each other. She
measures herself, her dormitory roommate, and the women in the adjoining
rooms; then she measures the next man each woman dates. Here are the d
This version: September 12, 2016.
POL-UA 800
Quantitative Methods in Political Science
Fall Semester 2016
Cantor Center, 101: Monday, Wednesday, 4:55PM610PM
Prof. Arthur Spirling
19 West 4th St, 405
[email protected]
212-998-8066
Office Hours: Tuesd
1.
2.
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6.
7.
8.
9.
10.
11.
No. Lots of possible explanations why use your imagination
Median and mode are both every day
Two parts:
a. IQR = $72,000-24,000 = $48,000
b. $72,000 + (48,000 x 1.5) = $144,000; $100,000 not an outlier
Lesters GPA is 1.
Homework 9
Due April 21, 2011
Question 1
A social worker randomly selects 28 households with children. He finds a correlation of -.21
between the average weekly work hours of the parents and the happiness index of the children in
that household. Is this c
Homework 8
Due April 14, 2011
Question 1
Freshmen at public universities work 12.2 hours per week for pay, on average, and the
standard deviation is 10.5 hours. At private universities the mean is 9.2 hours and the
standard deviation is 9.9 hours. Assume
Homework 7
Due April 7, 2011
Question 1
One large course is broken down into sections with 30 students each. The section
meetings are led by teaching assistants. On the final the mean grade () is 63 and the
standard deviation () is 20. However in one sect
Homework 6
Due March 31, 2011
Question 1
Soon after he took office in 1963, President Johnson was approved by 160 out of a
sample of 200 Americans. With growing disillusionment over his Vietnam policy, by
1968 he was approved by only 70 out of a sample of
Homework 5
Due March 24, 2011
Question 1
Find the proportion under a standardized normal curve in the following cases:
a) Greater than 1.25
b) Less than -0.40
c) Less than 0.80
d) Between 0.40 and 1.30
e) Between -0.30 and 0.90
f) Less than -1.50 or great
Homework 4
Due March 10, 2011
Question 1
A randomly selected American is asked to respond yes, no or maybe to this question: Do you
intend to vote in the next presidential election? The sample space is cfw_ yes, no, maybe . Which
of the following represen
Homework 2
Due February 17, 2011
1.
A college Calculus class has 32 students in it. Here are the ages of the students:
18
19
20
22
18
19
20
23
a.
Construct a stem-and-leaf diagram illustrating the age distribution in the
class. Note that some stems may no
Homework 1
Due February 10, 2011
1.
Indicate whether the following variables are categorical/ordinal (orderable),
categorical/nominal (non-orderable) or quantitative:
a.
b.
c.
d.
e.
f.
2.
Academic department size: Number of full-time faculty
Region of nat
Homework 10
Due April 28, 2011
Question 1
Regression coefficients were calculated for a model with one dependent variable,
POLITY (indicating level of democracy), and six independent variables, GOVEF
(government effectiveness), CPI9500 (government corrupt