Question 1
2.5 out of 2.5 points
Providing information about the true purpose of a study as soon after the
completion of data collection as possible is referred to as
Selected
Answer:
c.
debriefin
g.
Question 2
2.5 out of 2.5 points
When we identify factors that indicate when an event or events will occur, we
have used
Selected
Answer:
a.
predictio
n.
Question 3
2.5 out of 2.5 points
Number on a football jersey is to the _____ scale of measurement and
temperature measured on the Fahrenheit scale is to the _____ scale of
measurement.
Selected
Answer:
d.
nominal;
interval
Question 4
2.5 out of 2.5 points
Whereas histograms are typically used for discrete, scale data, what type of
graph is typically used for continuous scale data?
Selected
Answer:
frequency
polygon
Question 5
2.5 out of 2.5 points
A subjective means of collecting data is to _____ as a more objective means of
collecting data is to _____.
Selected
Answer:
c.
narrative records;
checklists
Question 6
0 out of 2.5 points
Which of the following statements best describe the “General Principles” in the
Ethical Principles of Psychologists and Code of Conduct?
Selected
Answer:
they outline the obligations of research
psychologists
Question 7
0 out of 2.5 points
Imagine that you conducted a single-sample t test with 12 participants. For a two-
tailed test, the tcv at a = 0.05 would be
Selected
Answer:
c.
±2.17
9.
Question 8
0 out of 2.5 points
In the case of a positive relationship, as scores on X _____, scores on Y _____.
Selected
Answer:
d.
none of the other alternatives is
correct
Question 9
2.5 out of 2.5 points
Two variables increasing and decreasing together is to _____ as two variables
moving in opposite directions is to _____.
Selected
Answer:
c.
positive relationship; negative
relationship
Question 10
2.5 out of 2.5 points
Truthfulness is to _____ as consistency is to _____.
Selected
Answer:
d.
validity;
reliability
Question 11
2.5 out of 2.5 points
When we can generalize from the sample used in a study to the population of interest, we say
that the study has _____ validity.
Selected
Answer:
c.
external
Question 12
2.5 out of 2.5 points
Concerns for within-subjects designs frequently include _____ and _____.
Selected
Answer:
c.
carryover effects; order effects
Question 13
2.5 out of 2.5 points
The null hypothesis for a two-tailed independent-groups t test states that
Selected
Answer:
b.
H0: m1 = m2.
Question 14
2.5 out of 2.5 points
Sometimes it is difficult to generalize the results of a study to the population because of the
_____ problem.
Selected
Answer:
c.
college sophomore
Question 15
2.5 out of 2.5 points
For an independent-groups t test, effect size can be measured using
Selected
Answer:
a.
Cohen’s d.
Question 16
2.5 out of 2.5 points
A mechanism for controlling order effects either by including all orders or treatment
presentations or by randomly determining the order for each participants is
Selected
Answer:
d.
counterbalancing
.
Question 17
2.5 out of 2.5 points
Alison’s bathroom scale will not register a weight of more than 130 pounds. Alison does not
realize this, and therefore is unaware that she has put on a few pounds until she begins to
notice how tight her clothes are. This illustrates the confound of a _____ effect.
Selected
Answer:
d.
ceiling
Question 18
2.5 out of 2.5 points
Internal validity is
Selected
Answer:
b.
the extent to which the results of an experiment can be attributed to the
manipulation of the independent variable, rather than to some confounding
variable.
Question 19
0 out of 2.5 points
If a researcher reported for an independent-groups t test that t(18) = 2.90, p< .01, how many
participants were there in the study?
Selected
Answer:
a.
18
Question 20
0 out of 2.5 points
If an independent-groups t test has seven participants in each group, then the degrees of
freedom are
Selected
Answer:
a.
14.
Question 21
2.5 out of 2.5 points
Imagine that you conducted a correlated-groups t test with 12 participants. For a two-tailed
test, the tcv at α = .05 would be
Selected
Answer:
d.
±2.201.
Question 22
2.5 out of 2.5 points
A decline in performance due to repeated testing is a(n) _____ effect and improvement in
performance due to repeated testing is a(n) _____ effect.
Selected
Answer:
a.
fatigue; practice
Question 23
0 out of 2.5 points
Which of the following t test results has the greatest chance of statistical significance?
Selected
Answer:
d.
t(18) = 1.70
Question 24
0 out of 2.5 points
If a correlated-groups t test and an independent-groups t test both have df=16, which
experiment used more participants?
Selected
Answer:
b.
The correlated-groups t test used more
participants.
Question 25
2.5 out of 2.5 points
For a correlated-groups t test, a one-tailed alternative hypothesis states that
Selected
Answer:
a.
Ha: m1-m2 > 0.
Question 26
2.5 out of 2.5 points
If the null hypothesis is true, then the t test should be close to
Selected
Answer:
a.
0.00.
Question 27
2.5 out of 2.5 points
For a two-tailed correlated-groups t test, the null hypothesis states that
Selected
Answer:
d.
H0: m1-m2 = 0.
Question 28
0 out of 2.5 points
In a research study comparing two conditions, researchers obtain 24 scores from each
condition. If this was a within-subjects design, then there were _____ participants in the
study.
Selected
Answer:
b.
48
Question 29
0 out of 2.5 points
When conducting an Independent Samples T-Test in SPSS, which of the following
is the “grouping” variable?
Selected
Answer:
dependent
variable
Question 30
0 out of 2.5 points
If SPSS Output provides a “Sig.” value of 0.03 and you have a two-tailed
hypothesis, you should:
Selected
Answer:
cannot determine based on the information
provided
Question 31
0 out of 2.5 points
To ensure the sample is representative of the population about whom one is
trying to generalize, one should use:
Selected
Answer:
exact
replication
Question 32
0 out of 2.5 points
If there was a sudden, unexpected change in leadership when a researcher was
collecting data on workplace satisfaction, which threat to internal validity should
be of most concern?
Selected
Answer:
instrumentation
error
Question 33
2.5 out of 2.5 points
If a teacher wants to assess whether there is a difference between males and
females on test performance, the null hypothesis would be:
Selected
Answer:
There is no difference in test performance
between genders.
Question 34
2.5 out of 2.5 points
The most appropriate graph type for an independent samples t-test is:
Selected
Answer:
bar
graph
Question 35
0 out of 2.5 points
In an experimental study of the effects of anxiety on appetite, where subjects are
randomly assigned to either an anxiety group or the no-anxiety group, anxiety is
the:
Selected
Answer:
dependent
variable
Question 36
0 out of 2.5 points
The most appropriate graph type for a paired samples t-test is:
Selected
Answer:
scatterpl
ot
Question 37
2.5 out of 2.5 points
When entering data into SPSS for an independent samples t-test, the
independent variable will be entered:
Selected
Answer:
into a single column with values assigned to the
two groups
Question 38
0 out of 2.5 points
Which of the following is NOT an assumption for an independent samples t-test?
Selected
Answer:
underlying distribution is
normal
Question 39
0 out of 2.5 points
Which of the following statements is NOT true concerning a correlated groups test
design?
Selected
Answer:
less
time
Question 40
2.5 out of 2.5 points
