A. Moore: Problem 1.32
1. Histogram (c) because the data set only includes two values. Also, the values are
distributed more equally than Histogram (b), which you would expect for gender.
2. Histogram (b) because the data set only includes two values and
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Homework 7
8.14
Framing bias. The way the question is worded caused a difference in the way people
responded.
8.20
b) People choose the polls that interest them so the sampling is not actually random.
8.24
b) 39% of the community cannot be r
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Homework 4
4.12
a) The correlation between body mass and metabolic rate is .6645
b)
Correlation= 0.7551
Correlation= 0.5803
c) Point A raises the correlation because it falls close to the line and point b lowers
the correlation because it is
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Homework 8
14.10
a) (17.08, 26.91).
b) 2.5 The smaller confidence interval indicates that it is trying to
incorporate all of the sample mean
c) 5
d) The stay the same because the standard deviation of the population is the
same and the sampl
5.8
A)
B) I would not use x to predict Y because the distribution is not linear.
C) At x=10 y=30
D)
The pattern of this distribution is not very different from the other one.
5.14
A lurking variable could be language barrier. Math is the same in every lan
Formulas
a Mean (use a calculator):
_ m1+m2+m+mn 1
= = m-
m n n X a
a Standard deviation (use a calculator):
1
'.*s1Z(mi_)2
c Median: Arrange all observations from smallest
to largest. The rnedian M is located (a + 1) f2
observations from the beginning of
6.6 Are the people who wrote this book not aware that there are no field goals in
basketball?
a) Jamie 46.83%
Lindsay 47.64%
b) Jamie 2-point 50.85%
Jamie 3-point 37.11%
Lindsay 2-point 50.59% Lindsay 3-point 23.81%
c) Lindsays overall percentage was high
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SOC 360
Data Analysis Project 2
Political Party and Pride
I. Research Question
After reading about the 2014 GSS I am interested to know whether or not peoples
political views are related to their overall feelings about our country. For examp
3.16) A
3.20)
3.24)
3.28)
a)
b)
c)
d)
3.34) Mean = 105.8387 St.Dev. = 14.27141
1 St. Dev. away - 91.59729 X 120.11011
2 St. Dev. away 77.29589 X 134.38151
B.
1)
74.19%
25.81% 100%
C.
1.
a) 361
b) 29
c) BA Mean = .2597175
St. Dev. = .0294243
IQR = .164
2.
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SOC 360
HW1
Total Number of Pro Choice Respondents Per Age Group
GSS, 2006, N= 1935
18-29
30-39
40-49
50-59
60-
Pro Choice Respondents per age group
represented as a percentage of the number
surveyed
GSS, 2006, N= 1935
18-29
30-39
40-49
50-5
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SOC 360
HW 2
2.22) a
2.24) a
2.32)
A) Using a percentage rather than a count give a more accurate
representation of how the weight class compares to the others as pare of a whole
value. People can understand a percent more than if they were
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Data Analysis Project
Is Lower Household Income Associated With Higher Rates of Teenage Pregnancy?
Research Question
Teenage pregnancy is higher in the United States than almost any other country in the world.
There are many costs associated
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SOC 360
HW1
1.16 Categorical Variable
1.24 a) Categorical
b) Categorical
c) Quantitative
d) Categorical
e) Quantitative
1.38 All of the data are multiples of to and 15 minutes, which is not surprising since its
normal to measure time in 5, 1
A. (Problems from Moores book)
Problem 2.4
Including his 2001 homerun total of 73, Barry Bondss mean homerun total = 36.95 =
37. His median homerun total in this case = 34. When his 73 HR year is removed, the
mean becomes 34.94 = 35, while the median rema
A. Problems from Moores Book
1. Problem 6.19
MARITAL STATUS: Single: 4.1%, Married: 93.9%, Divorced: 1.5%, Widowed:
0.5%
JOB GRADE: Grade 1: 11.6%, Grade 2: 51.5%, Grade 3: 30.2%, Grade 4: 6.7%
Yes, the percentages do add up to exactly 100%, even with rou
A. Problems from Moores Book
Problem 4.8 (b&c)
(b)
(c) The correlation calculated in STATA is r = 0.9552
Pric e Fo res t~t
P ric e
Fo rest Los t
1 .000 0
0 .955 2 1.0 000
60
Problem 4.11 Speed and MPG
50
Sp e ed
1 .0 0 00
0 .0 0 00 1 .0 0 00
20
30
Speed
4
Book Problems
Problem 8.8
a) Sending out emails and asking for students to reply is poor practice based on voluntary response.
b) A bad example not based on voluntary response is surveying only certain grades. For example,
freshman may have very different
Book Problems
Problem 14.4
z*=2.24 because its corresponding value is 0.9875. The area in each of the tails is 0.0125, so
0.0125+0.975 gives us the area under the curve below the z score of 2.24. See the model:
Problem 14.8
a) 18.9 25.1
b) For a 90% confi
Problem 15.2
a) N(115, 23)
b) 118.6 is not very far from 115, so it does not suggest much difference between the scores
based on age differences. However, 125.8 is much farther away, which may suggest
some difference between scores based on age.
Problem 1
Nate Burian
SOC 360Chap. 18 Problem Set
23 April 2013
Book Problems
Problem 18.2
x = 89.01
s = 13.13
Problem 18.6
b) x = 1.12 s = 0.0063
CI = x t*(s / n) 1.12 2.11*(0.0063 / 11) 1.12 0.004 CI is 1.116 to 1.124
c) H0: = 1
Ha: 1
t = (x - ) / (s / n) (1.12 1
Stats360
Problem Set #2
A.) 2.4.) When Barry Bonds 73 home run year is dropped, the mean changes from 37 home runs
to 35 home runs. The median changes from 37 home runs to 35.5 home runs when the year 2001
with 73 runs is dropped. By dropping the stat of
The relationship between liking country music and ones education level.
March 12, 2013
Abstract:
In this analysis, data from the 1993 General Social Survey (GSS) was used in order to
determine the relationship between whether there is a relationship betwe
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SOC 360
Homework 9
16.8
a) (541-515)/(116(root50)=.0317
b) (542-515)/(116(root50)=.0329
Neither situation hits the 5% significant level, but because the sample size is large enough
(greater than 40) usually any difference is considered signi