Quiz (Chapter 14, Second
Part)
Mixed ANOVAs
Introduction
 How many betweensubjects factors are there in a mixed ANOVA? How
many withinsubjects factors?
 The 3 most popular kinds of mixed ANOVAs involve either __ (how many?)
or __ (how many?) factors.
TwoWay Mixed ANOVAs
 A 2x3 mixed ANOVA would have how many withinsubjects factors?
 (T/F) The label "2way repeated measures ANOVA" may or may not be
referring to a 2way mixed ANOVA.
 If Figure 17.1 is modified to fit the study described in Excerpt
17.2, how many main rows would there be?
 (T/F) A 2way mixed ANOVA, a fully betweensubjects 2way ANOVA,
and a fully withinsubjects 2way ANOVA all have the same basic purpose
and usually involve three null hypotheses.
 How many main effects means were there for Group in the 2way mixed
ANOVA discussed in Excerpt 17.5?
 In the study that provided Excerpt 17.3, __ (how many?) research
questions were concerned with interaction.
 If, in Excerpt 17.7, the upper righthand cell had been larger, the
main effect means for "Emotional Response" would have turned out ____
(closer together/further apart).
 The "top" and "bottom" sections in a mixed ANOVA's summary table
are often labeled with what terms?
 If an ANOVA summary table is built for Excerpt 17.2, which sectiontop
or bottomwill contain the main effect for Task? What about the main
effect for Condition? What about the TaskbyCondition interaction?
 The number of subjects supplying data for a mixed ANOVA can be determined
by adding 1 to which of the dfs?
 If 20 patients had been involved in the study described in Excerpt
17.1, how many df would be on the ANOVA summary table's rows called
Treatment Intensity, Error (Between), Time, and Treatment Intensity
x Time?
 In Excerpt 17.8, how many means were focused upon by the F for Feedback
Condition? The F for Trial Block?
 (T/F) Even if significant, the main effect Fs in Excerpt 17.6 would
not be "probed" via any post hoc tests.
 In Table 1 of Excerpt 17.10, the summary for one of the 8 post hoc
investigations doesn't match the authors' textual summary of that same
post hoc investigation. This discepancy exists relative to which comparisons?
 (T/F) In Excerpt 17.11, each of the 3 columns labeled MS should have
been labeled SS instead.
 In Excerpt 17.12, how many times was a "test of simple main effects"
conducted to probe the interaction?
 Which of the Ftests of a 2way mixed ANOVA are positively biased
if the sphericity assumption is violated?
 Can a 2way mixed ANOVA yield results that are significant statistically
but not in a practical sense?
ThreeWay Mixed ANOVAs
 (T/F) A 3way mixed ANOVA will always have repeated measures on two
of the three factors.
 A standard 3way mixed ANOVA has __ null hypotheses, __ for main
effects and __ for interactions.
 How many scores will each subject contribute to a splitplot factorial
3.23?
 3
 5
 6
 23
 323
 In Excerpt 17.23, the mean of 12.13 and which other mean(s) was/were
based on scores from the same students?
 In Excerpt 17.24, there would be __ main effect means for Stimulus,
each based on __ raw scores.
 In a summary table for Excerpt 17.20, the Ages row will be in the
table's ____ (upper/lower) section. What about the Phases row? What
about the Hand Condition x Age row? What about the Age x Phase row?
 How many different denominators (i.e., Error MSs) are used to form
the Fs in a 3way mixed ANOVA with repeated measures on 1 of the 3 factors?
How many are used if there are repeated measures on 2 factors?
 The text portion of Excerpt 17.27 ends with the words "there were
no other interactions." How many "other interactions" were there? And
what additional word should have been inserted after "other"?
 In Excerpt 17.27, how many post hoc null hypotheses were set up and
evaluated when the NewmanKeuls procedure was used to "probe' the significant
interaction shown in Figure 2?
 What do most authors do relative to the important sphericity assumption
that underlies 3way mixed ANOVAs?
 Test the sphericity assumption
 Reduce the dfs of critical values
 Neither a nor b
 Threeway mixed ANOVAs ___ (do/don't) involve an assumption of equal
population variances.
 (T/F) Cohen recommends that effect size fs of .10, .25. and .40 be
considered small, medium, and large.
 In Excerpt 17.30, the effect of the success/failure condition was
____ (small/medium/large) in light of the etasquared value computed
for this significant main effect.
 Planned comparisons ___ (can/cannot) be used in conjunction with
2way and 3way mixed ANOVAs.
A Final Comment
 In Excerpt 17.32, what is/are the dependent variable(s)?
 If the results of Excerpt 17.33's ANOVA were to be presented in a
summary table, how many Fs would appear in the upper portion of the
summary table?
 If the results of Excerpt 17.34's ANOVA were to be presented in a
summary table, how many Fs would appear in the upper portion of the
summary table?
Click here for answers.
