Susan A. Nolan and Thomas E. Heinzen
Statistics for the Behavioral Sciences
Second Edition
Chapter 10:
The Paired-Samples t Test
iClicker Questions
Copyright © 2012 by Worth Publishers
Chapter 10
1. It is hypothesized that there will be a significant
difference in aggression scores after caffeine
consumption as compared to before caffeine
consumption. This hypothesis best illustrates what type
of t test?
a) a single-sample t test
b) a nonparametric t test
c) an independent samples t test
d) a paired-samples t test
Chapter 10
(Answer)
1. It is hypothesized that there will be a significant
difference in aggression scores after caffeine
consumption as compared to before caffeine
consumption. This hypothesis best illustrates what type
of t test?
a) a single-sample t test
b) a nonparametric t test
c) an independent samples t test
d) a paired-samples t test
Chapter 10
2. A paired-samples t test is also known as a(n):
a) single sample t test.
b) independent samples t test.
c) dependent samples t test.
d) confidence interval.
Chapter 10
(Answer)
2. A paired-samples t test is also known as a(n):
a) single sample t test.
b) independent samples t test.
c) dependent samples t test.
d) confidence interval.
Chapter 10
3. In a paired-samples t test, each participant provides ____
score(s), one for each condition.
a) 1
b) 2
c) 3
d) 4
Chapter 10
(Answer)
3. In a paired-samples t test, each participant provides ____
score(s), one for each condition.
a) 1
b) 2
c) 3
d) 4
Chapter 10
4. Your textbook identifies six steps in calculating a pairedsamples t test. Listed below are the first three of these steps.
Which one does not belong?
a) Randomly assign participants to different
conditions.
b) Identify the populations, distribution, and assumptions.
c) State the null and research hypotheses.
d) Determine the characteristics of the comparison
distribution.
Chapter 10
(Answer)
4. Your textbook identifies six steps in calculating a pairedsamples t test. Listed below are the first three of these steps.
Which one does not belong?
a) Randomly assign participants to different
conditions.
b) Identify the populations, distribution, and assumptions.
c) State the null and research hypotheses.
d) Determine the characteristics of the comparison
distribution.
Chapter 10
5. Your textbook identifies six steps in calculating a pairedsamples t test. Listed below are the last three of these
steps. Which one does not belong?
a) Determine the critical values, or cutoffs.
b) Calculate the test statistic.
c) Make a decision
d) Identify the variable causing the change.
Chapter 10
(Answer)
5. Your textbook identifies six steps in calculating a pairedsamples t test. Listed below are the last three of these
steps. Which one does not belong?
a) Determine the critical values, or cutoffs.
b) Calculate the test statistic.
c) Make a decision
d) Identify the variable causing the change.
Chapter 10
(Answer)
6. When determining cutoffs for a paired-samples t test, we
typically determine critical values in terms of:
a) raw scores.
b) t statistics.
c) z scores.
d) degrees of freedom.
Chapter 10
(Answer)
6. When determining cutoffs for a paired-samples t test, we
typically determine critical values in terms of:
a) raw scores.
b) t statistics.
c) z scores.
d) degrees of freedom.
Chapter 10
7. Your textbook lists five steps in calculating a confidence
interval for a paired-samples t test. Which of the
following is not one of those steps?
a) Draw a picture of a t distribution that includes the
confidence interval.
b) Indicate the bounds of the confidence interval on
the drawing.
c) Add the critical t statistics to the curve.
d) Start over and calculate z scores instead.
Chapter 10
(Answer)
7. Your textbook lists five steps in calculating a confidence
interval for a paired-samples t test. Which of the
following is not one of those steps?
a) Draw a picture of a t distribution that includes the
confidence interval.
b) Indicate the bounds of the confidence interval on
the drawing.
c) Add the critical t statistics to the curve.
d) Start over and calculate z scores instead.
Chapter 10
8. To calculate effect size for a paired-samples t test we
use:
a) hypothesis testing.
b) the p statistic.
c) Cohen’s d.
d) the z statistic.
Chapter 10
(Answer)
8. To calculate effect size for a paired-samples t test we
use:
a) hypothesis testing.
b) the p statistic.
c) Cohen’s d.
d) the z statistic.
Chapter 10
9. The fact that a research participant encounters the
dependent variable twice in a within-groups design
means that we have to be concerned about:
a) order effects.
b) using statistics.
c) compensating participants.
d) gender differences.
Chapter 10
(Answer)
9. The fact that a research participant encounters the
dependent variable twice in a within-groups design
means that we have to be concerned about
a) order effects.
b) using statistics.
c) compensating participants.
d) gender differences.
Chapter 10
10. Counterbalancing minimizes order effects by:
a) randomly assigning participants to conditions.
b) varying the order of presentation of different
levels of the independent variable from one
participant to the next.
c) including a lot more research participants in the
study.
d) converting the within subjects design into a
between subjects design.
Chapter 10
(Answer)
10. Counterbalancing minimizes order effects by:
a) randomly assigning participants to conditions.
b) varying the order of presentation of different
levels of the independent variable from one
participant to the next.
c) including a lot more research participants in the
study.
d) converting the within subjects design into a
between subjects design.