Test 12

-There are ______ factors in a 2 × 3 ANOVA design.

-2

-A researcher measures differences in recall between participants watching a regular or a 3-D movie clip with a romance, drama, or action theme. Different participants were observed in each group. What type of statistical design is appropriate for this study?

-two-way between-subjects ANOVA

A researcher computes a 2 × 3 factorial ANOVA. In this example, how many interactions can be observed?

1

There are ______ cells or groups in a 3 × 4 ANOVA design.

12

A researcher computes a 3 × 4 between-subjects ANOVA. What are the degrees of freedom for the first factor for this study?

2

A researcher computes a 2 × 4 between-subjects ANOVA. What are the degrees of freedom for the second factor for this study?

3

A researcher computes a 2 × 3 between-subjects ANOVA in which 6 participants are observed in each cell. What are the degrees of freedom error (within) for this study?

30

A researcher computes a 3 × 5 between-subjects ANOVA. What are the degrees of freedom for the A × B interaction for this study?

8

Using a two-way between-subjects ANOVA with Factor A (age: young adult, middle-aged adult) and Factor B (type of employment: blue collar, white collar), a researcher found that scores for young adults and middle-aged adults significantly varied across the levels of the second factor (type of employment). In this study, the researcher found a significant ______.

A × B interaction

Professor Sleepy thinks how long a lecture is (50 minutes, 1 hour & 50 minutes or 2 hours & 50 minutes) and the time of day the class meets (morning, afternoon, or evening) interact to effect the amount of time students spend on their cellphone during the class. What is the correct alternative hypothesis for Prof. Sleepy's study

There is an effect of length of lecture or time of day the class meets alone or together on the amount of time students spend on their cellphone during class.

A researcher groups college students in a study based on their year in college (freshman, sophomore, junior, senior) and the type of college they attend (junior, technical, university). He concludes that perceptions of academic cheating are more positive among freshman attending junior college. To reach this conclusion, which statistical test would need to be computed?

a two-way between-subjects ANOVA a simple main effect test a post hoc test

Professor Sleepy thinks how long a lecture is (50 minutes, 1 hour & 50 minutes or 2 hours & 50 minutes) and the time of day the class meets (morning, afternoon, or evening) interact to effect the amount of time students spend on their cellphone during the class. What is the dependent variable for Prof. Sleepy's study?

amount of time on the cellphone

To summarize any type of two-way ANOVA using APA format, we report each of the following except the ______.

critical values

Computing a two-way between-subjects ANOVA is appropriate when ______.

different participants are assigned to each group or cell

Using an A × B ANOVA, a researcher concludes that Factor A is significant, independent of Factor B. In this study, this researcher found a significant ______.

main effect of Factor A

Which of the following hypotheses identifies a prediction that requires that two factors be observed in the same statistical design?

mood will improve most when people consume foods that are high in sugar and fat

For an analysis of variance, the term "two-way" refers to ______.

the number of factors in the design

The following is a summary of a interaction for a two-way ANOVA: F(2, 30) = 2.04, p < .05 ( = .15). Assuming the test statistic value is correct, then which of the following must be incorrect in this report?

the p < 0.05

A researcher computes a two-way between-subjects ANOVA and finds a significant main effect of Factor A and an A × B interaction. Which significant effect would the researcher typically be most interested in?

the significant A x B interaction

Professor Sleepy thinks how long a lecture is (50 minutes, 1 hour & 50 minutes or 2 hours & 50 minutes) and the time of day the class meets (morning, afternoon, or evening) interact to effect the amount of time students spend on their cellphone during the class. What are the independent variables for Prof. Sleepy's study?

time of day the class meets and length of the lecture

Which of the following correctly identifies all source of variation in the two-way between-subjects ANOVA?

two main effects, one interaction, error, and total

A professor compares the exam grades of students based on whether they have a learning disability (yes, no) and where they sit in the classroom (in the front, middle, or back row). Different participants were observed in each group. What type of statistical design is appropriate for this study?

two-way between-subjects ANOVA

Which of the following is a reason why it can be necessary to include two factors in the same statistical design?

you expect there to be an interaction between the factors

Professor Sleepy thinks how long a lecture is (50 minutes, 1 hour & 50 minutes or 2 hours & 50 minutes) and the time of day the class meets (morning, afternoon, or evening) interact to effect the amount of time students spend on their cellphone during the class. What is the correct null hypothesis for Prof. Sleepy's study?

There is no effect of length of lecture or time of day the class meets alone or together on the amount of time students spend on their cellphone during class.

A researcher computes a 2 × 3 between-subjects ANOVA test in which 11 participants were observed in each condition. If F = 5.20 for both main effect tests and the A × B interaction test, then the decision for each test ______.

will be significant for both main effects and the A × B interaction