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
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
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
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
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
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
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
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 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
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