Quiz Over the 1st Half of
Chapter 13 (pp. 306324)
TwoWay Analyses of Variance
(NOTE: This quiz covers pages 317336 of the book.
A different quiz covers pages 336356.)
Introduction
 (T/F) Whereas a oneway ANOVA has 1 independent variable, a twoway
ANOVA has 2 independent variables.
 A twoway ANOVA is ______ (univariate/multivariate) in nature.
Similarities Between OneWay and TwoWay ANOVAs
 Like a oneway ANOVA, a twoway analysis of variance focuses on ______
(means/variances).
 (T/F) Like a oneway ANOVA, inferences in a twoway ANOVA move from
the population to the sample.
The "Structure" of a TwoWay ANOVA: Factors, Levels, and Cells
 (T/F) In a twoway, there will always be 2 factors.
 The constituent parts of a factor are called _____ .
 In Excerpt 13.1, how many of the twoway ANOVA's factors are referred
to in Table 3's title?
 How many factors are there in a 3x5 ANOVA? How many levels? How many
cells?
 A twoway ANOVA must have a minimum of how many cells?
The "Structure" of TwoWay ANOVAs: Active & Assigned Factors; the Formation
of Groups
 If used as an independent variable in a twoway ANOVA, which of these
would be an "active" factor:
 Gender
 Marital status
 Hair color
 In Excerpt 13.2, both factors were ____ (active/assigned).
 (T/F) A twoway ANOVA's research participants can be randomly assigned
to cells only if both factors are active.
The "Structure" of TwoWay ANOVAs: BetweenSubjects and WithinSubjects
Factors
 Any factor in a twoway ANOVA will be either a "betweensubjects"
factor or a(n) "______" factor.
 (T/F) If a factor is "betweensubjects" in nature, research participants
will be measured under (i.e., exposed to) all levels of the factor.
 (T/F) An assigned factor will necessarily be "betweensubjects" in
nature.
The "Structure" of TwoWay ANOVAs: Samples and Populations
 How many samples were in Excerpt 13.5's study? What about Excerpt
13.6's study?
 The number of populations in a twoway ANOVA corresponds with the
number of ____.
 If both factors of a twoway ANOVA are assigned (as exemplified
by Excerpt 13.1), the study's populations ___ (must/might/can't) be
tangible
in nature.
 If one or both factors of a twoway ANOVA are active, the twoway
ANOVA's populations will be ____ (abstract/tangible) in nature.
Three Research Questions
 In a twoway ANOVA, how many research questions involve main effects?
How many involve interactions?
 In Excerpt 13.7, how many main effect means are there for Food Condition?
 If 10 research participants are randomly assigned to each of the
cells of a 3x3 ANOVA, each main effect mean will be based upon the
scores
of
how
many
participants?
 (T/F) If all cell means are identical, it follows that all of the
main effect means will be identical too.
 (T/F) The research question dealing with interaction is concerned
with cell means, not main effect means.
 In Excerpt 13.1, there would have been absolutely no interaction
if the upper lefthand mean had been = __ .
 If the 2 factors are called A and B, is the AxB interaction the same
thing as the BxA interaction?
The Three Null Hypotheses (and the Three Alternative Hypotheses)
 Using symbols, show what the null hypothesis was for the main effect
of Prime Condition in Excerpt 13.7.
 In Excerpt 13.6, how many ms would appear
in the main effect null hypothesis for ethnicity?
 What would the subsript "labels" be for the population means referred
to by the previous question?
 (T/F) If both main effect null hypotheses are false, the interaction
null hypothesis must also be false too.
 In the righthand picture near the top of p. 319, if the m
in the lower righthand cell had been equal to 20 (rather than equal
to 0), which of the 3 null hypotheses would be false?
 The alternative hypothesis for the main effect of "rows" says that
___ (all/at least 2) row ms differ.
Presentation of Results: Results From the TwoWay ANOVA Study on Identifying
States
 Whereas a oneway ANOVA leads to 1 Fratio, a twoway ANOVA leads
to __ Fratios.
 (T/F) The labels for the columns in oneway and twoway ANOVA summary
tables are the same.
 The main effect rows are usually located near the ___ (top/bottom)
of the twoway ANOVA summary table.
 In Table 13.1, if the MS for Within Groups had been exactly
1.00, how big would the F have been for the interaction?
Presentation of Results: Results from Various TwoWay ANOVA Studies
 (T/F) In Table 13.1, the row for interaction could have been labeled "MS
x G."
 In Excerpt 13.12, the 4 computed means are:
 main effect means
 cell means
 If the summary table for a 3x4 ANOVA indicates that dferror
= 108 , how many research participants were measured?
 The Fs and ps in Excerpts 13.10, 13.11, and 13.14 show that there is a
_______ (direct/indirect) relationships between the size of F and the size of p.
 In Excerpt 13.13, what was the size of the sum of squares for the interaction when the dependent
variable was airtoground intrateam coordination?
 (T/F) The content of Excerpt 13.12 shows that if both main effects in a twoway ANOVA turn out
to be significant, then the interaction also will be significant.
Click here for answers.
NOTE: Questions dealing with
the 2nd half of Chapter 13 appear on a separate quiz.
