Statistics for the Behavioral SciencesSecond Edition

Chapter 13:

Within-Groups ANOVA

iClicker Questions

Copyright © 2012 by Worth Publishers

Susan A. Nolan and Thomas E. Heinzen

Chapter 131. 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 132. 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 133. 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 134. 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 135. 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 137. 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 138. 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 139. When calculating R2 (effect size) for the one-way within-

groups 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 within-groups ANOVA we do not have to be concerned with calculating

a) Ssbetween

b) Sstotal

c) Sssubjects

d) SSwithin

Chapter 1310.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.