Question 1

How many participants would be required for a complete factorial 4 × 5 between-subjects design with three observations per cell?

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The answer of How many participants would be required for...

Question 2

For Factor A, you have timed the rate at which three groups of participants can solve puzzles under three conditions of noise: high, medium, and low.In addition, for Factor B the participants have received either no caffeine or a high level of caffeine equivalent to 4 cups of coffee).What kind of design is this called?

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Question 3

Professor Blake has completed an experiment where all subjects were asked to give assessments of three different hypothetical individuals as a function of their age.Prior to making these assessments, half of all subjects were randomly assigned to be first presented with a film designed to promote the challenges of aging whereas the other half purposely did not view this film.What type of research design would this study be and why?

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Question 4

For a two-way ANOVA, state the null and alternative hypotheses for Factor B that has 4 levels.

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Question 5

When you are comparing pairs of cell means for the Tukey HSD Test, which comparisons are confounded and unconfounded?

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Question 6

In a 3 x 4 design with four participants per cell, what degrees of freedom would you use in looking up the F_aitfor the interaction effect?

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Question 7

Suppose you have done a two-way ANOVA where the interaction was not significant.How should you next proceed?

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Question 8

When performing the Tukey HSD Test on an interaction, why must we use an adjusted value of k ?

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Question 9

The following table contains the cell means for a study involving two types of dashboard displays and three types of drive seat designs. $\begin{array}{|l|r|r|r}
\hline & \text { Bench Type Seat } & \text { Bucket Type Seat } & \text { Captain's Style Seat } \
\hline \text { Dashboard Display A } & 20 & 8 & 32 \
\hline \text { Dashboard Display B } & 6 & 24 & 13 \
\hline
\end{array}$ 
a.Graph these means.
b.Does this graph indicate the presence of an interaction or not? Explain.

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The answer of The following table contains the cell means...

Question 10

A researcher has done a pilot study where she recruited a small sample of men and women and then assessed their reaction time to a certain stimuli measured in seconds and listed below in the table) after either playing music or not.Calculate and state the main effects for the two factors.
Factor A: Playing Music?  Factor B: Gender

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Question 11

In a 2 × 2 design with 40 participants equally distributed across the conditions:
a.How many levels of Factor A are there?
b.How many participants are in Factor A?

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The answer of In a 2 × 2 design with...

Question 12

Suppose you perform a 2 x 3 ANOVA on 18 participants equally divided across all cells.Your F_abtfor Factor A is 9.15.This is a significant F_abt .What is the correct way to report this finding?

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The answer of Suppose you perform a 2 x 3...

Question 13

In a 4 × 2 design with 80 participants distributed equally across the conditions:
a.How many cells are there?
b.How many participants are in each cell?

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Question 14

Suppose you are interested in how well students perform on a standardized math-achievement test after they have completed a six-week math unit in either a computer-assisted class, a videotaped course, or a regular classroom and comparing the performance of male students against that of female students.
a.What is the dependent variable?
b.What are the independent variables?
c.How many levels does each independent variable have?

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The answer of Suppose you are interested in how well...

Quiz 12: Understanding the Two-Way Analysis of Variance

How many participants would be required for a complete factorial 4 × 5 between-subjects design with three observations per cell?

For a two-way ANOVA, state the null and alternative hypotheses for Factor B that has 4 levels.

When you are comparing pairs of cell means for the Tukey HSD Test, which comparisons are confounded and unconfounded?

In a 3 x 4 design with four participants per cell, what degrees of freedom would you use in looking up the Fait for the interaction effect?

Suppose you have done a two-way ANOVA where the interaction was not significant.How should you next proceed?

When performing the Tukey HSD Test on an interaction, why must we use an adjusted value of k ?

In a 2 × 2 design with 40 participants equally distributed across the conditions: a.How many levels of Factor A are there? b.How many participants are in Factor A?

Suppose you perform a 2 x 3 ANOVA on 18 participants equally divided across all cells.Your Fabt for Factor A is 9.15.This is a significant Fabt .What is the correct way to report this finding?

In a 4 × 2 design with 80 participants distributed equally across the conditions: a.How many cells are there? b.How many participants are in each cell?

In a 3 x 4 design with four participants per cell, what degrees of freedom would you use in looking up the F_aitfor the interaction effect?

Suppose you perform a 2 x 3 ANOVA on 18 participants equally divided across all cells.Your F_abtfor Factor A is 9.15.This is a significant F_abt .What is the correct way to report this finding?