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Exampleswithanswers:
Chapter-2
1.Reactiontimeinsecondsisanexampleofa(n)_scale.
a. ratio
c. interval
b. ordinal
d. nominal
ANS: A
2.GiventhedataX1=1,X2=4,X3=5,X4=8,X5=10,evaluateX.
a. 1
c. 27
b. 18
d. 28
ANS: D
3.GiventhedataX1=1,X2=4,X3=5,X4=8,X5=10,evalu
HW-3
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. A psychologist is interested in the social interactions of preschool children. She measures
the number of verbal interactions that each child at a pre
Stats-HW-2
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. We have collected the following data:
X1 = 6, X2 = 2, X3 = 4, X4 = 1, X5 = 3
For these data,
a. 16
b. 10
_
is equal to _.
c. 7
d. 13
2. After pe
HW-5
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. A stockbroker has kept a daily record of the value of a particular stock over the years and
finds that prices of the stock form a normal distribution
HW-6
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. Correlation and regression differ in that _.
a. correlation is primarily concerned with the size and direction of relationships
b. regression is prima
HW-9
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. The binomial distribution is symmetrical _.
a. for all values of P and Q
c. for N > 8
b. only when P = Q = .50
d. for P > Q
_
2. Assuming the binomial
HW-7
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. For regression purposes,
a. X is assigned to the variable being predicted.
b. Y is assigned to the variable being predicted.
c. It doesnt matter wheth
Stats-HW-CH4
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_
1. A history professor gives a quiz to his class and records the following scores:
13, 11, 11, 9, 12, 13, 16, 14, 11, 10, 8, 13, 20.
The mode(s)
5% of CDs ordered are Bad
0-4
Bad=B
95% of CDs ordered are Good
5-94
Good=G
Trial #1
03242 50692 18977 28370
Trial #2
78695 21402 85525 81183
Trial #3
60809 06765 39996 81915
6 CDs=66.67 %
5 CDs=33.33%
Trial 1
Trial 2
Trial 3
03
B
78
G
60
G
24
G
69
G
80
G
Mooseburgers
AL
$123.00
Boris
$136.00
Connie
$144.00
Dwight
$150.00
Ernie
$110.00
Francois
$131.00
Gloria
$140.00
Horace
$160.00
Isaac
$120.00
Juan
$130.00
McTofu
Ken
Latisha
Maria
Nate
Otto
Pablo
Quentin
Rosa
Sally
Ted
Uta
$110.00
$115.00
$130.00
$100.00