Chapter 5 Homework key
[Over 65 points]
2012/10/02
501. [Ch. 4, 8 p.] (Definitions)
a. [2 p.] What is the difference between a discrete and a continuous
variable?
A discrete variable is a variable that will only take on values that are
integers (whole num
Math Homework B
[Over 70 points]
[Extra Credit]
Due: Thu Sep 15
NAME: _
M001. [4 p.] New material: Discrete Sets. [Ref: Math notes on Set Theory]
Given the following 2 sets:
A = cfw_a,b,c,f,h,j
B = cfw_b,d,f,i,j,k
a. List the members of the set C
A
B:
b.
Key to Math Homework A
[Over 70 points]
[Extra Credit]
2011-09-15
M001. [4 p.] New material: Discrete Sets. Given the following 2 sets:
A = cfw_a,b,c,f,h,j
B = cfw_b,d,f,i,j,k
a. List the members of the set C
A
B:
b. List the members of the set D A B :
cf
Math Homework A: Calculator Exercises
[Over 82 points]
Due: not
These exercises are intended to help you become familiar with your scientific
calculator. Calculate the answers to the problems given here, then compare them
to the correct answers in the key
Key to Math Homework A
[Over 82 points]
2011
M007. [18 p.] Calculator exercises.
Given:
A = 3, B = 5, C = 8, D = 11.
Calculate the following expressions using the above values:
a. A
B
C
D
27
b. A
B
C
D
-11
c. A
B
C
D
8.72727273
d. A
B
C
D
14.625
A
B
C
D
1
Chapter 6 Homework
[Over 57 points]
Due: Tue Oct 4
NAME: _
601. [Chapter 6; 12 points] (Definitions)
(a)
[2 p.] What is a continuous variable?
(b)
[2 p.] What is a continuous probability distribution?
Given some unspecified probability distribution whose
Chapter 5 Homework
[Over 65 points]
Due: Tue Sep 27
NAME: _
501. [Ch. 4, 8 p.] (Definitions)
a. [2 p.] What is the difference between a discrete and a continuous
variable?
b. [2 p.] What is a probability function?
c. [2 p.] What is the difference between
Chapter 4 Homework
[Over 72 points]
Due: Tue Sep 20
NAME: _
403. [Chapter 4; 16 p.] (Definitions)
a) [2 p.] What is a statistical experiment?
b) [2 p.] What is the sample space for a statistical experiment?
c) [2 p.] What do we mean by independent statist
Chapter 4 Homework key
[Over 72 points]
2011/09/20
403. [Chapter 4; 16 p.] (Definitions)
a) [2 p.] What is a statistical experiment?
A natural or artificial process which produces, each time it is invoked, one
outcome out of a small set of possible outcom
Chapter 3 Homework
[Over 50 points]
Due: Tue Aug 30
NAME: _
303. [Ch. 3; calc; 14 points] (Descriptive statistics)
Given the following data set (12 entries) which represents a SAMPLE:
72
45
65
86
48
77
65
54
86
46
90
86
a. [4 p.] Calculate the range and t
Chapter 3 Homework key
[Over 50 points]
08/30/11
303. [Ch. 3; calc; 14 points] (Descriptive statistics)
Given the following data set (12 entries) which represents a SAMPLE:
72
45
65
86
48
77
65
54
86
46
90
86
a. [4 p.] Calculate the range and the IQR.
Fir
Chapter 2 Homework
[Over 24 points]
Due: Tue Sep 6
NAME: _
201. [Chapter 2; 24 points] (Definitions)
a) [4 p.] Define the terms frequency and relative frequency as they
pertain to a data set
b) [4 p.] Using the following data set, calculate relative frequ
Chapter 2 Homework key
[Over 24 points]
09/06/11
201. [Chapter 2; 24 points] (Definitions)
a) [4 p.] Define the terms frequency and relative frequency as they
pertain to a data set
Frequency simply refers to a count of the number of entities that
gave the
Chapter 4 Homework key
[Over 72 points]
2012/09/25
403. [Chapter 4; 16 p.] (Definitions)
a) [2 p.] What is a statistical experiment?
A natural or artificial process which produces, each time it is invoked, one
outcome out of a small set of possible outcom
Chapter 3 Homework key
[Over 50 points]
09/04/12
303. [Ch. 3; calc; 14 points] (Descriptive statistics)
Given the following data set (12 entries) which represents a SAMPLE:
72
45
65
86
48
77
65
54
86
46
90
86
a. [4 p.] Calculate the range and the IQR.
Fir
Chapter 2 Homework key
[Over 24 points]
09/11/12
201. [Chapter 2; 24 points] (Definitions)
a) [4 p.] Define the terms frequency and relative frequency as they
pertain to a data set
Frequency simply refers to a count of the number of entities that
gave the
Chapter 6 Homework key
[Over 57 points]
2012/10/09
601. [Chapter 6; 12 points] (Definitions)
(a)
[2 p.] What is a continuous variable?
A variable that can take on any Real (fractional) value, not just whole
numbers.
(b)
[2 p.] What is a continuous probabi
KEY to
BUS-271 In-class Quiz over Chapter 1
[Over 54 points]
2012-08-30
102. [Chapter 1; 6 points] (Definitions)
Explain the difference between a population and a sample. Does this
distinction reside in the data, or does it depend on how we plan to use th
KEY to
BUS-271 In-class Quiz over Chapter 2
[Over 20 points]
2012-09-13
204. [Chapter 2; 20 points] (Definitions)
a) [4 p.] Define the terms frequency and relative frequency as they
pertain to a data set
Frequency simply refers to a count of the number of
Key to
BUS-271 In-class Quiz over Chapter 3
[Over 27 points]
2012-09-06
305. [Ch. 3; 27 points] (Descriptive statistics)
We want to examine whether there is any relationship between a students
age and his or her height, using a subset of the data for this
Key to
BUS-271 In-class Quiz over Chapter 4
[Over 45 points]
2012-09-27
402. [Ch. 4; 12 points] (Definitions: Set theory)
Given the following Venn diagram:
(a) [2 p.] list the members of set A.
A = cfw_ a, b, c, d, i, j
(b) [2 p.] list the members of set
Key to
BUS-271 In-class Quiz over Chapter 6
[Over 48 points]
2012-10-11
607. [Ch. 6, 12 points] (Probability / Exponential pdf)
Given an Exponential distribution with unknown mean .
We define the following three events (intervals of x):
A = [ 2, 4 ]
B = [
Key to
BUS-271 In-class Quiz over Chapter 7
[47 points]
2012-10-25
701. [Ch. 7; 3 points] (Definitions)
Define what we mean by sampling bias.
Sampling refers to the process of extracting a subset (a sample) from a
population, so that we can use a sample s
Key to
BUS-271 In-class Quiz over Chapter 8
[32 points]
2012-11-01
801. [Ch. 8; 3 points] (Definitions)
Define the term confidence interval (CI).
x
It is an interval a around the sample statistic
such that the
probability that the corresponding population
Key to
BUS-271 In-class Quiz over Chapter 9
[40 points]
2012-11-08
908. [Ch. 9; 15 points] (Hypothesis testing)
Consider the following hypothesis test:
H0: 25
Ha: < 25
a. [3 p.] Is this a one-tailed or a two-tailed test?
It is a one-tailed test. We reject
KEY TO
BUS-271 In-class Quiz over Chapter 12
[64 points]
2012-12-04
1251. [Ch. 12; 42 points] (Simple linear regression)
We want to examine whether there is any relationship between the amount
of income a family earns in a year and the amount of money it
Key to
BUS-271 In-class Quiz over Chapter 12
[30 points]
2012-12-04
1201. [Ch. 12; 4 p.] (Definitions) Given a population, and given a sample
from that population, containing data on two variables, X and Y. State in
words what we are trying to do when we
Chapter 1 Homework key
[Over 24 points]
08/28/12
101. [Chapter 1; 24 points] (Definitions)
Use the following recent survey data to answer questions (a) through (h):
A
-72
36
66
58
88
Bob
Alice
Peter
Aisha
Janet
Where:
B
-Pan Am
American
American
Southwest
Chapter 1 Homework
[Over 24 points]
Due: TUE 8/23/2011
NAME: _
101. [Chapter 1; 24 points] (Definitions)
Use the following recent survey data to answer questions (a) through (h):
Bob
Alice
Peter
Aisha
Janet
Where:
A
-72
36
66
58
88
B
-Pan Am
American
Amer
Chapter 1 Homework key
[Over 24 points]
08/23/11
101. [Chapter 1; 24 points] (Definitions)
Use the following recent survey data to answer questions (a) through (h):
A
-72
36
66
58
88
Bob
Alice
Peter
Aisha
Janet
Where:
B
-Pan Am
American
American
Southwest