Statistics Chapter 11 Exam Questions And Answers 100% Pass
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Statistics
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Statistics
Statistics Chapter 11 Exam Questions And
Answers 100% Pass
The degrees of freedom for error is called ______.
a. degrees of freedom error
b. degrees of freedom denominator
c. degrees of freedom within-groups
d. all of these - answerd. all of these
A researcher compares differences in positiv...
Statistics Chapter 11 Exam Questions And
Answers 100% Pass
The degrees of freedom for error is called ______.
a. degrees of freedom error
b. degrees of freedom denominator
c. degrees of freedom within-groups
d. all of these - answer✔d. all of these
A researcher compares differences in positivity between participants in a low-, middle-, or
upper middle-class family. If she observes 15 participants in each group, then what are the
degrees of freedom for the one-way between-subjects ANOVA?
a. (2, 42)
b. (3, 12)
c. (2, 12)
d. (3, 43) - answer✔a. (2, 42)
A researcher observed the mating behavior of 10 porpoises in 5 different social conditions.
What are the degrees of freedom between-groups for a one-way within-subjects ANOVA?
a. There is not enough information to answer this question.
b. 4
c. 9
d. 27 - answer✔b. 4
Computing a one-way within-subjects ANOVA is appropriate when ______.
a. different participants are assigned to each group
b. the same participants are observed across groups
c. the levels of one or more independent variables are manipulated
d. all of these - answer✔b. the same participants are observed across groups
A researcher conducts a study using the one-way between-subjects ANOVA. He computes
mc059-1.jpg = 120 and mc059-2.jpg = 200. What is the effect size for this test using eta-
squared?
a. .38
b. There is not enough information to answer this question.
c. 1.67
d. .60 - answer✔a. .38
Using a between-subjects ANOVA design, ______.
a. the same participants are observed in each group
b. data are not analyzed between groups
c. n participants are observed k times
d. n · k participants are each observed one time - answer✔d. n · k participants are each
observed one time
Post hoc tests are computed ______.
a. following a significant ANOVA test to make pairwise comparisons
b. to determine which set of degrees of freedom can be attributed to the variability between-
groups
c. to determine if groups means differ, even for tests in which the decision is to retain the null
hypothesis
d. prior to conducting a hypothesis test - answer✔a. following a significant ANOVA test to make
pairwise comparisons
Which of the following is a measure of proportion of variance for a one-way between-subjects
ANOVA?
a. omega-squared
b. both A and B
c. eta-squared
d. estimated Cohen's d - answer✔b. both A and B
The following result is reported for a one-way within-subjects ANOVA: F(2, 27) = 3.20, p < .05
(mc069-1.jpg = .14). Which value in the summary suggests that the design was within-subjects?
a. the test statistic value
b. the p value
c. the partial estimate for eta-squared
d. the degrees of freedom - answer✔c. the partial estimate for eta-squared
The following is a summary of a one-way between-subjects ANOVA: F(2, 37) = 3.42, p < .05,
mc067-1.jpg = .12. How many pairwise comparisons need to be made for this ANOVA result?
a. 12
b. 2
c. 4
d. 3 - answer✔d. 3
In a study with 4 groups and 10 participants in each group, the sum of squares for the between-
groups source of variation is 60. What is the value for the mean square between-groups in this
study?
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