# When the variability attributed to between groups is

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When the variability attributed to between groups is equal to the variability from PSYCH 311 at Washington State University

97.   A researcher randomly assigned 32 children to observe a short clip depicting either their favorite superhero , a parent , a teacher , or no person at all ( n = 8 per group ) . If BG SS = 30 and E SS = 104 , then what was the decision at a . 05 level of significance for a one - way between - subjects ANOVA ?
A ) Reject the null hypothesis .
B ) Retain the null hypothesis .
C ) There is not enough information to answer this question .
98.   A researcher assigns 21 adolescents to rate the likability of a person described in a vignette as having one of three personality traits . An equal number of participants are assigned to each group . If obt F = 4.08 for this study , then what was the decision at a . 05 level of significance for a one - way between - subjects ANOVA ?
99 .   A researcher computes the following one - way between - subjects ANOVA table . State the decision at a .05 level of significance . ( Hint : Complete the table first . ) Source of Variation SS df MS F Between groups 32 4 Within groups ( error ) 45 Total 122
100 .   In a study with three groups and 13 participants in each group , the sum of squares for the within - groups source of variation is 18 . What is the value for the mean square within - groups in this study ?
101 .   When the variability attributed to between - groups is equal to the variability attributed to error , then the value of the test statistic for a one - way between - subjects ANOVA is ,
A ) Equal to 0 .
B ) Equal to 1 .
C ) Significant at any sample size .
D ) Undefined in that the test statistic can not be computed in this case .
102 .   Following a significant one - way between - subjects ANOVA in which k > 2 , what is the next appropriate step ?
103 .   Which of the following is not a post hoc test for a one - way between - subjects ANOVA ?
104 .   Which of the following post hoc tests is associated with the least power to detect an effect ?
105 .   Post hoc tests are computed
A ) Prior to conducting a hypothesis test .
B ) To determine which set of degrees of freedom can be attributed to the variability between - groups .
C ) Following a significant ANOVA test to make pairwise comparisons .
D ) to determine if groups means differ , even for tests in which the decision is to retain the null hypothesis .
106 .   A researcher conducts a study using the one - way between - subjects ANOVA . He computes BG SS = 120 and E SS = 200 . What is the effect size for this test using eta - squared ?
107 .   Which measure of proportion of variance tends to overestimate the size of an effect in a population ?
108 .   The following is a summary of a one - way between - subjects ANOVA : F ( 2 , 37 ) = 3.42 , p < .05 , = .12 . How many pairwise comparisons need to be made for this ANOVA result ?
109 .   The following is a summary of a one - way between - subjects ANOVA : F ( 2 , 37 ) = 3.42 , p < .05 , = .12 . How many participants were observed in this study ?
A ) 12
B ) 37
C ) 40
D ) 39
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Chapter 8 / Exercise 5
Understandable Statistics: Concepts and Methods
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101.When the variability attributed to between-groups is equal to the variability attributed to error, then the value of the test statistic for a one-way between-subjects ANOVA is,A)Equal to 0.B)Equal to 1.C)Significant at any sample size.D)Undefined in that the test statistic cannot be computed in this case.
Page 14
##### We have textbook solutions for you!
The document you are viewing contains questions related to this textbook. The document you are viewing contains questions related to this textbook.
Chapter 8 / Exercise 5
Understandable Statistics: Concepts and Methods
Brase Expert Verified
102.Following a significant one-way between-subjects ANOVA in which k> 2, what is the next appropriate step?
103.Which of the following is not a post hoc test for a one-way between-subjects ANOVA?
104.Which of the following post hoc tests is associated with the least power to detect an effect?
105.Post hoc tests are computedA)Prior to conducting a hypothesis test.B)To determine which set of degrees of freedom can be attributed to the variability between-groups.C)Following a significant ANOVA test to make pairwise comparisons.D)to determine if groups means differ, even for tests in which the decision is to retain the null hypothesis.
106.A researcher conducts a study using the one-way between-subjects ANOVA. He computes BGSS= 120 and ESS= 200. What is the effect size for this test using eta-squared?
107.Which measure of proportion of variance tends to overestimate the size of an effect in a population?
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108.The following is a summary of a one-way between-subjects ANOVA: F(2, 37) = 3.42, p.05, = .12. How many pairwise comparisons need to be made for this ANOVA result?<
109.The following is a summary of a one-way between-subjects ANOVA: F(2, 37) = 3.42, p.05, = .12. How many participants were observed in this study?<A)12B)37C)40D)39
Additional Partial list of concepts and calculations to know for exam.I.e., Of course, the exam will sample from all of the covered material and so you are expected to study all assigned material. However, if you know the example multiple choice and short answer above andthe concepts referenced below (including all end-of-chapter questions and key terms), you should do very well). E.g., remember that exams do not cover material that was only presented in labs (see syllabus). Consequently, you will not use SPSS on any exam.For all chapters covered, also know the following:Definitions or explanations or descriptions for all key terms at the end of the chapter.End of chapter questions (remember: even-numbered ones have answers in the text—at end).
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