PSC 201, Spring 2013
Problem Set #1
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Thursday, Jan. 31st at the beginning of class. You must
show your work (on problems that require it) to receive credit. Please write
PSC 201 Spring 2013
1
Solution Set #9
Chapter 23 review exercises
3. (a) Part of the answer to this question is given directly in the text: the average
commute distance is estimated as 8.7 miles. However, in the second gap we have
to ll in the value of th
PSC 201 Spring 2013
1
Solution Set #8
Chapter 19 review exercises
#3 This study is not trustworthy because it uses data from only one
county, which is not necessarily representative of the whole country;
therefore, the study is not representative of all s
PSC 201 Spring 2013
1
Solution Set #7
Chapter 16 review exercises
1. (iii) is correct. Remember, chance error is expected. So the absolute
number of 1s will not be exactly the number in the population (or
the box). However, even though there will be chanc
PSC 201, Spring 2013
Problem Set #9
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Thursday, April 25th at the beginning of class. You
must show your work (on problems that require it) to receive credit. Please
writ
PSC 201, Spring 2013
Problem Set #8
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Tuesday, April. 16th at the beginning of class. You
must show your work (on problems that require it) to receive credit. Please
writ
PSC 201 Spring 2013
Solution Set #6
Review Exercises Chapter 13
#2 Option (i) is better, as the chance that you will win $1 are diminished by the requirement in (ii) that the second card be a queen:
4
4
4
52 > 52 51 .
#4 The chance that the rst four cards
PSC 201 Spring 2013
Solution Set #5
Review Exercises Chapter 10
#2 (a) The individuals who scored 115 at age 18 scored exactly 1 SD18
above the mean back then. From our regression formula we know
that # of SD35 = r (# of SD18 ) = 0.80 1 = 0.80. Thus, the
PSC 201, Spring 2013
Problem Set #7
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Thursday, April. 4th at the beginning of class. You
must show your work (on problems that require it) to receive credit. Please
writ
PSC 201, Spring 2013
Solution Set #4
1. Chapter 8 review exercises
#1 (d) is a scatter diagram for the data. First, the point of averagesin
this case, (100, 100)must be in the center of the cloud, ruling out
(a) and (c). Second, the empirical rule tells u
PSC 201, Spring 2013
Problem Set #6
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Thursday, Mar. 28th at the beginning of class. You
must show your work (on problems that require it) to receive credit. Please
write
PSC 201, Spring 2013
Problem Set #5
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Tuesday, Mar. 5th at the beginning of class. You must
show your work (on problems that require it) to receive credit. Please write
l
PSC 201, Spring 2013
Problem Set #4
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Thursday, Feb. 28th at the beginning of class. You
must show your work (on problems that require it) to receive credit. Please
write
PSC 201 Spring 2013
Solution Set #1
(1) Lets say we are interested in the eect that automated election calls have on election outcomes. If we ask a group of people who received these calls and a group who did not receive
these calls who they voted for, is
PSC 201, Spring 2013
Solution Set #3
1. There are many possible operational denitions to measure presidential
power. One way to measure presidential power would be the presidents
success at making appointments. The operational denition would be
# failed a
PSC 201, Spring 2013
Problem Set #3
All numbered problems are from Freedman, Pisani and Purves, 4th ed.
Problem set is due Tuesday, Feb. 12th at the beginning of class. You must
show your work (on problems that require it) to receive credit. Please write
PSC 201, Spring 2013
Problem Set #2
All numbered problems are from Freedman, Pisani, and Purves, 4th ed.
Problem set is due Thursday, Feb. 7th at the beginning of class. You must
show your work (on problems that require it) to receive credit. Please write