Statistics for The Behavioral Sciences 10th Edition Gravetter
Test Bank
TRUE/FALSE
1 : Using the average score to describe a sample is an example of inferential statistics.
A : true
B : false
Correct Answer : B
2 : A researcher is interested in the average income for registered voters in the United States.
The entire group of registered voters is an example of a population.
A : true
B : false
Correct Answer : A
3 : The average score for a population is an example of a statistic.
A : true
B : false
Correct Answer : B
4 : A researcher interested in vocabulary development obtains a sample of three-year-old
children to participate in a research study. The average score for the group of 20 is an example
of a parameter.
A : true
B : false
Correct Answer : B
5 : The goal for an experiment is to demonstrate that changes in one variable are responsible
for causing changes in a second variable.
A : true
B : false
Correct Answer : A
6 : In an experimental study, individuals in a control condition receive the experimental
treatment.
A : true
B : false
Correct Answer : B
7 : A correlational study typically uses only one group of participants but measures two different
variables (two scores) for each individual.
A : true
B : false
Correct Answer : A
,8 : A correlational study is used to examine the relationship between two variables but cannot
determine whether it is a cause-and-effect relationship.
A : true
B : false
Correct Answer : A
9 : A recent report concluded that children with siblings have better social skills than children
who grow up as an only child. This is an example of an experimental study.
A : true
B : false
Correct Answer : B
10 : A recent report concluded that college graduates have higher life-satisfaction scores than
individuals who do not receive college degrees. For this study, graduating versus not graduating
is an example of a quasi-independent variable.
A : true
B : false
Correct Answer : A
11 : The participants in a research study are classified as high, medium, or low in self-esteem.
This classification involves measurement on a nominal scale.
A : true
B : false
Correct Answer : B
12 : Constructs are external attributes or characteristics that can be directly observed to
describe and explain behavior.
A : true
B : false
Correct Answer : B
13 : Classifying people into two groups on the basis of gender is an example of measurement
on an ordinal scale.
A : true
B : false
Correct Answer : B
14 : Students in an introductory art class are classified as art majors and non-art majors. This is
an example of measurement on a nominal scale.
A : true
B : false
Correct Answer : A
15 : To determine how much difference there is between two individuals, you must use either an
interval or a ratio scale of measurement.
,A : true
B : false
Correct Answer : A
16 : If a researcher measures two individuals on a nominal scale, it is impossible to determine
which individual has the larger score.
A : true
B : false
Correct Answer : A
17 : If a researcher measures two individuals on an ordinal scale, then it is impossible to
determine how much difference exists between the two people.
A : true
B : false
Correct Answer : A
18 : For statistical purposes, there usually is not much difference between scores from an
interval scale and scores from a ratio scale.
A : true
B : false
Correct Answer : A
19 : Recording the number of students who are absent each day at a high school would be an
example of measuring a discrete variable.
A : true
B : false
Correct Answer : A
20 : A high school gym teacher records how much time each student requires to complete a one-
mile run. This is an example of measuring a continuous variable.
A : true
B : false
Correct Answer : A
21 : In an introductory theater class, the professor records from the number of movies students
watched the previous year. The teacher is measuring a discrete variable.
A : true
B : false
Correct Answer : A
22 : The real limit separating two adjacent scores is located at the upper boundary, or at the
higher score.
A : true
B : false
Correct Answer : B
, 23 : An operational definition identifies a set of operations for measuring an external behavior
and then uses the resulting measurement as a definition of a hypothetical construct.
A : true
B : false
Correct Answer : A
24 : To compute (X)2, you first add the scores, then square the total.
A : true
B : false
Correct Answer : A
25 : The first step in computing (X + 1) is to sum the scores.
A : true
B : false
Correct Answer : B
26 : For the following scores, (X + 1) = 9. Scores: 1, 3, 0, 1
A : true
B : false
Correct Answer : A
27 : For the following scores, (X + 1)2 = 81. Scores: 1, 3, 0, 1
A : true
B : false
Correct Answer : B
28 : For the following scores, (X 1) = 10. Scores: 1, 3, 7
A : true
B : false
Correct Answer : B
29 : For the following scores, X2 = 35. Scores: 1, 3, 5
A : true
B : false
Correct Answer : A
30 : For the following scores, X2 = 49. Scores: 1, 4, 2, 0
A : true
B : false
Correct Answer : B
MULTIPLE CHOICE
31 : A researcher uses an anonymous survey to investigate the study habits of American
