Quiz (Chapter 14)
Analysis
of Variance with Repeated Measures
Introduction
 In a 2x4 fully repeated measures ANOVA, a subject contributes __
(how many?) scores to the analysis.
 (T/F) In any fully repeated measures ANOVA, all of the factors
will be withinsubjects in nature.
 If a factor's levels are called "Pre" & "Post," this factor probably
__ (is/isn't) a withinsubjects factor.
OneWay Repeated Measures ANOVAs
 (T/F) The null hypothesis for a oneway withinsubjects ANOVA looks exactly
like the null hypothesis for a oneway betweensujects ANOVA
 A twodimensional matrix like that shown in Figure 14.1 usually ___ (is/isn't)
included in the technical research report.
 If there had been 20 people in the study depicted in Figure 14.1 (rather than just
6 people), the df number in Table 14.1 on the row called "Residual" would
be equal to __.
 If the F of a oneway repeated measures ANOVA is significant, and if there are 3
or more levels of the factor, post hoc tests ___ (can/can't) be performed.
 (T/F) If the factor's levels are "treatments," it is important that the treatments be
presented in the same order.
 A "______ effect" exists if one treatment, once received, influences the impact
of the next treatment.
 If the sphericity assumption is violated, the Ftest will turn out
to be _____ (larger/smaller) than it should.
 The test procedure that's sometimes used to check on the sphericity
assumption is called "_____'s test."
 If the sphericity assumption seems untenable, one option open to
the researcher is to use a critical value based on smaller df
values. When this is done, the researcher is said to be using the "______
correction."
TwoWay Repeated Measures ANOVAs
 A 2way repeated measures ANOVA has __ null hypotheses, __ of which
deal(s) with main effects.
 If 20 people provide data for a 2x3 repeated measures ANOVA, each
person will be measured __ times.
 (T/F) If there had been twice as many (i.e., 12 rather than 6) players
involved in the "Simon Study" shown in the top portion of Figure 14.2,
this would not have changed the number of means shown in the lower portion
of that Figure.
 A full summary table for a 2way repeated measures ANOVA has __ rows
of information and __ F values.
 If you add 1 to the Total df in the summary table for a 2way repeated
measures ANOVA, what do you get?
 In a 2way repeated measures ANOVA, how many MS values serve as the
denominator when forming Fs?
 In Excerpt 14.15, how many pairwise null hypotheses were set up and
tested?
 (T/F) In the study that provided Excerpt 14.16, the order of the
"walking rate" conditions was randomized.
 (T/F) Because the sample sizes are equal, a 2way repeated measures
ANOVA is robust to the sphericity assumption.
 Which lowercase Greek letter represents the numerical
estimate of how badly the sphericity assumption is violated?
 Which of the numbers in Excerpt 14.18 speaks to the issue of practical
significance versus statistical significance?
 .01
 .78
 261.82
 92,908.53
TwoWay Mixed ANOVAs
 A 2x3 mixed ANOVA has how many withinsubjects factors?
 If Figure 14.3 is modified to fit the study summarized in Excerpt
14.24, how many rows would there be for participants?
 (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 Sentence Type in the
2way mixed ANOVA discussed in Excerpt 14.28?
 In the study that provided Excerpt 14.25, how many research questions
were concerned with interaction?
 If, in the diagram on page 368, the upper righthand cell mean had
been smaller, the main effect means for "Gender" would have
turned out ____ (closer together/farther apart).
 The "top" and "bottom" sections in a mixed ANOVA's
summary table are often labeled with what two terms?
 If an ANOVA summary table is built for Excerpt 14.27, the main effect
forTreatment Group will appear in the _____ (top/bottom) section of
the summary table.
 The number of participants supplying data for a mixed ANOVA can be
determined by adding 1 to the df for which source?
 If 30 children had been involved in the study described in Excerpt
14.24, how many df would be on the ANOVA summary table's row
called Error (Within)?
 (T/F) In Excerpt 14.27, each main effect F focused on 3
means.
 (T/F) Even though it was significant, the main effect F for
Context in Excerpt 14.23 would not be "probed" via any post
hoc tests.
 (T/F) A post hoc investigation can focus only on the main effect
means of a twoway mixed ANOVA.
 If we double the number of paricipants in a twoway mixed ANOVA,
which of the main effect dfs will change?
 The df for the betweensubjects main effect
 The df for the withinsubjects main effect
 The dfs for both main effects
 The df for neither main effect
 If we double the number of paricipants in a twoway mixed ANOVA,
which of the error term dfs will change?
 The df for the betweensubjects error term
 The df for the withinsubjects error term
 The dfs for both error terms
 The df for neither error term
 How many of the Ftests of a 2way mixed ANOVA are positively
biased if the sphericity assumption is violated?
 (Yes/No) Can a 2way mixed ANOVA yield results that are significant
statistically but are not significant in a practical sense?
Three Final Comments
 If a researcher says that he/she used a "two way repeated measures
ANOVA," you ____ (can/can't) be confident that there were repeated
measures on both factors.
 The ninestep version of hypothesis testing ___ (can/can't) help
the researcher avoid the possible problem of ending up with statistical
significance
without practical significance.
 (T/F) The use of withinsubjects factors in an ANOVA eliminates
the possibility of inferential error.
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