Susan A. Nolan and Thomas E. Heinzen
Statistics for the Behavioral Sciences
Second Edition
Chapter 13:
Within-Groups ANOVA
iClicker Questions
Copyright © 2012 by Worth Publishers
Chapter 13
1. A one-way within-groups ANOVA is also known as:
a) A one-way between-groups ANOVA.
b) A t test.
c) A repeated-measures ANOVA.
d) A Tukey HSD test.
Chapter 13
(Answer)
1. A one-way within-groups ANOVA is also known as:
a) A one-way between-groups ANOVA.
b) A t test.
c) A repeated-measures ANOVA.
d) A Tukey HSD test.
Chapter 13
2. It is advantageous to use a within-groups ANOVA
compared to a between-groups ANOVA because with a
within-groups ANOVA:
a) there is a greater variance of scores.
b) we have reduced error because the same
participants contribute to each condition of the
study.
c) we are likely to have to include more research
participants in the study.
d) you are more likely to discover a research result
that has cause-effect implications.
Chapter 13
(Answer)
2. It is advantageous to use a within-groups ANOVA
compared to a between-groups ANOVA because with a
within-groups ANOVA:
a) there is a greater variance of scores.
b) we have reduced error because the same
participants contribute to each condition of the
study.
c) we are likely to have to include more research
participants in the study.
d) you are more likely to discover a research result
that has cause-effect implications.
Chapter 13
3. A one-way within-groups ANOVA is used when all of
the following are true EXCEPT:
a) There is just one nominal or ordinal independent
variable.
b) The independent variable has more than two
levels
c) The dependent variable is nominal.
d) Every participant is in every group.
Chapter 13
(Answer)
3. A one-way within-groups ANOVA is used when all of
the following are true EXCEPT:
a) There is just one nominal or ordinal independent
variable.
b) The independent variable has more than two
levels
c) The dependent variable is nominal.
d) Every participant is in every group.
Chapter 13
4. One difference between the one-way between-groups
ANOVA and the one-way within-groups ANOVA is that
only with the one-way within groups ANOVA
a) You have to be concerned about order
effects.
b) You have to calculate the sum of squares.
c) You have to randomly assign participants to
groups.
d) You are likely to have more participants in your
study.
Chapter 13
(Answer)
4. One difference between the one-way between-groups
ANOVA and the one-way within-groups ANOVA is that
only with the one-way within groups ANOVA
a) You have to be concerned about order
effects.
b) You have to calculate the sum of squares.
c) You have to randomly assign participants to
groups.
d) You are likely to have more participants in your
study.
Chapter 13
5. According to your textbook there are six steps of
hypothesis testing for a one-way within-groups ANOVA.
Below are listed the first three of these steps. Which
one does not belong?
a) Identify the populations, distribution, and
assumptions.
b) State the null and research hypothesis.
c) Determine the characteristics of the comparison
distribution.
d) Randomly assign participants to groups.
Chapter 13
(Answer)
5. According to your textbook there are six steps of
hypothesis testing for a one-way within-groups ANOVA.
Below are listed the first three of these steps. Which
one does not belong?
a) Identify the populations, distribution, and
assumptions.
b) State the null and research hypothesis.
c) Determine the characteristics of the comparison
distribution.
d) Randomly assign participants to groups.
Chapter 13
6. According to your textbook there are six steps of
hypothesis testing for a one-way within-groups ANOVA.
Below are listed the last three of these steps. Which
one does not belong?
a) Determine the critical values, or cutoffs.
b) Calculate the test statistic.
c) Determine which group had a causal influence
on the dependent variable.
d) Make a decision.
Chapter 13
(Answer)
6. According to your textbook there are six steps of
hypothesis testing for a one-way within-groups ANOVA.
Below are listed the last three of these steps. Which
one does not belong?
a) Determine the critical values, or cutoffs.
b) Calculate the test statistic.
c) Determine which group had a causal influence
on the dependent variable.
d) Make a decision.
Chapter 13
7. When conducting a one-way within-groups ANOVA
what is the formula for degrees of freedom between?
a) Dfbetween = n – 1
b) Dfbetween = (dfbetween)(dfsubjects)
c) Dfbetween = dfbetween + dfsubjects + dfwithin
d) Dfbetween = Ntotal – 1
Chapter 13
(Answer)
7. When conducting a one-way within-groups ANOVA
what is the formula for degrees of freedom between?
a) Dfbetween = n – 1
b) Dfbetween = (dfbetween)(dfsubjects)
c) Dfbetween = dfbetween + dfsubjects + dfwithin
d) Dfbetween = Ntotal – 1
Chapter 13
8. When conducting a one-way within-groups ANOVA
what is the formula for degrees of freedom within?
a) Dfwithin = n – 1
b) Dfwithin = (dfbetween)(dfsubjects)
c) Dfwithin = dfbetween + dfsubjects + dfwithin
d) Dfwithin = Ntotal – 1
Chapter 13
(Answer)
8. When conducting a one-way within-groups ANOVA
what is the formula for degrees of freedom within?
a) Dfwithin = n – 1
b) Dfwithin = (dfbetween)(dfsubjects)
c) Dfwithin = dfbetween + dfsubjects + dfwithin
d) Dfwithin = Ntotal – 1
Chapter 13
9. When calculating R2 (effect size) for the one-way withingroups ANOVA we do not have to be concerned with
calculating
a) Ssbetween
b) Sstotal
c) Sssubjects
d) SSwithin
Chapter 13
(Answer)
9. When calculating R2 (effect size) for the one-way withingroups ANOVA we do not have to be concerned with
calculating
a) Ssbetween
b) Sstotal
c) Sssubjects
d) SSwithin
Chapter 13
10. All of the following statements are true of matched
group designs EXCEPT:
a) Matched group designs have increased statistical
power over between group designs.
b) When employing a matched group design we may
not be aware of all the important variables that
participants should be matched on.
c) Matched group designs typically involve testing
fewer participants than within-group designs.
d) If one of the participants decides to drop out of the
study, then we must discard the data for the match
for this person.
Chapter 13
(Answer)
10. All of the following statements are true of matched
group designs EXCEPT:
a) Matched group designs have increased statistical
power over between group designs.
b) When employing a matched group design we may
not be aware of all the important variables that
participants should be matched on.
c) Matched group designs typically involve testing
fewer participants than within-group designs.
d) If one of the participants decides to drop out of the
study, then we must discard the data for the match
for this person.