Question 1

You can see an interaction effect numerically by looking at the pattern of __________ means.

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The answer of You can see an interaction effect numerically...

Question 2

Interaction effects can be described verbally, __________ , and numerically.

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The answer of Interaction effects can be described verbally, __________...

Question 3

A(n)__________ is when the influence of one variable that divides the groups changes according to the level of another variable that divides the groups.

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The answer of A(n)__________ is when the influence of one...

Question 4

In the top row of a 2 by 2 table of cell means, there was a 6 and a 6. In the bottom row, there was a 4 and a 4. This pattern indicates that there was a(n)__________ effect.

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The answer of In the top row of a 2...

Question 5

In a factorial design, a variable that separates groups is called the __________.

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The answer of In a factorial design, a variable that...

Question 6

In an analysis of variance, __________ are t tests conducted among pairs of means after finding that the F for the overall difference among the means is significant.

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The answer of In an analysis of variance, __________ are...

Question 7

A study of 50-year-olds found that, overall, women spend more time at home than men. However, a(n)__________ was found between education level and gender such that the difference between men and women was less for college-educated people than it was for those with only a high school education.

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The answer of A study of 50-year-olds found that, overall,...

Question 8

When you reject the null hypothesis in an ANOVA, this tells you that the population means are not all the same and which means differ from which others. (True or False)

Accepted Answer

Rejecting the null hypothesis in an ANOVA only tells you that at least one group mean is different from the others; it does not specify which means differ from which others.

Question 9

The approach to effect size for ANOVA that is described in your text involves calculating:

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The answer of The approach to effect size for ANOVA...

Question 10

Suppose you are planning a study involving four groups, and you expect a medium effect size (use the .05 level of significance). For 80% power, how many participants would you need for each group?

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The answer of Suppose you are planning a study involving...

Question 11

In a graph of a 2 by 2 analysis of variance, if there are no main or interaction effects, the pattern of bars will be __________.

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The answer of In a graph of a 2 by...

Question 12

You can tell whether there is a(n)__________ effect by looking at the marginal means.

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The answer of You can tell whether there is a(n)__________...

Question 13

The between-groups degrees of freedom is also called the __________.

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The answer of The between-groups degrees of freedom is also...

Question 14

According to the conventions for effect size of one-way analysis of variance, .14 is a __________ effect size. (small, medium, or large)

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The answer of According to the conventions for effect size...

Question 15

A researcher can make sense of interaction effects by graphing the pattern of cell means using a bar graph. Whenever there is an interaction, the pattern of bars on one section of the graph is __________ from the pattern on the other section of the graph.

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The answer of A researcher can make sense of interaction...

Question 16

A research article reported results of a one-way analysis of variance as F(4,45)= 3.82,
p < .01. There were __________ groups in the study.

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The answer of A research article reported results of a...

Question 17

In a two-way analysis of variance, a difference between the means on one variable ignoring the effects of the other variable is known as a(n)__________.

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The answer of In a two-way analysis of variance, a...

Question 18

A factorial design allows a researcher to study the effects of combining two or more variables. (True or False)

Accepted Answer

A factorial design is a type of experimental design that allows a researcher to investigate the effects of two or more variables and their interactions on an outcome. This design involves manipulating two or more independent variables and observing their effects on a dependent variable. By varying multiple variables simultaneously, researchers can better understand how these variables interact to produce an outcome of interest.

Question 19

Consider a study with 3 groups, each with 20 participants. A one-way analysis of variance had an F ratio of 6.21, which was significant at the .01 level. An article would report the results as __________.

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The answer of Consider a study with 3 groups, each...

Question 20

An example of a protected t test or "posthoc" test conducted following a significant ANOVA is:

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The answer of An example of a protected t test...

Quiz 10: Introduction to the Analysis of Variance