Exam 16: One-Way Analysis of Variance

We have run a one-way ANOVA comparing three treatments for anorexia and found a significant difference. We now want to convey the most useful information to our reader about how effect one treatment is relative to one or more other treatments. The best statistic to use here to convey that information would most likely be

(Multiple Choice)

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Question 21

When looking at multiple comparisons, the more tests that you run, the more likely that you will have a _______.

(Multiple Choice)

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Question 22

If η² = .16, 4% of the variability in the dependent variable is attributable to group membership.

(True/False)

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Question 23

Which of the following is not a critical element of the analysis of variance?

(Multiple Choice)

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Question 24

Calculate η² and ω ² for the previous problem.

(Essay)

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Question 25

Answer the following questions based on this SPSS output. a. How many groups were compared? b. What was the total sample size? c. Was the ANOVA significant? d. Which groups are significantly different from one another? Explain the nature of the differences.

(Essay)

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Question 26

In the analysis of variance we will assume that

(Multiple Choice)

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Question 27

We can probably get away with violating assumptions if

(Multiple Choice)

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Question 28

We use the symbol to represent

(Multiple Choice)

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Question 29

df_group is the number of groups being compared in the ANOVA.

(True/False)

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Question 30

The major difference between t tests and the analysis of variance is that the latter

(Multiple Choice)

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Question 31

In evaluating the F in the analysis of variance, we need to know

(Multiple Choice)

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Question 32

Which of the following represents a measure of the magnitude of effect?

(Multiple Choice)

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Question 33

In a Bonferrroni procedure, α is divided by the number of groups.

(True/False)

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Question 34

The post-hoc test which holds the familywise error rate at .05 by running each individual test at the c/alpha level (# comparisons/alpha) is the

(Multiple Choice)

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Question 35

In the analysis of variance with three groups the null hypothesis is

(Multiple Choice)

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Question 36

We want to compare the scores of different groups on a measure of reaction time. Three different groups were studied: patients with recent head injuries, patients with old head injuries, and a control group of non-injured people. We want to know which group of people has the fastest reaction time. What is the best statistical test to use to find this out?

(Multiple Choice)

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Question 37

Fisher's LSD test is most useful when

(Multiple Choice)

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Question 38

Which of the following is a possible null hypothesis in an analysis of variance with 5 groups? ( H ₁: μ₁ ≠ μ₂ ≠ μ₃ ≠ μ₄ ≠ μ₅; H ₂: μ₁ ≠ μ₂ = μ₃ = μ₄ = μ₅)

(Multiple Choice)

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Question 39

In an analysis of variance summary table, the df for groups always equals

(Multiple Choice)

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Question 40

Showing 21 - 40 of 85

When looking at multiple comparisons, the more tests that you run, the more likely that you will have a _______.

If η² = .16, 4% of the variability in the dependent variable is attributable to group membership.

Which of the following is not a critical element of the analysis of variance?

Calculate η² and ω ² for the previous problem.

Answer the following questions based on this SPSS output. a. How many groups were compared? b. What was the total sample size? c. Was the ANOVA significant? d. Which groups are significantly different from one another? Explain the nature of the differences.

In the analysis of variance we will assume that

We can probably get away with violating assumptions if

We use the symbol to represent

df_group is the number of groups being compared in the ANOVA.

The major difference between t tests and the analysis of variance is that the latter

In evaluating the F in the analysis of variance, we need to know

Which of the following represents a measure of the magnitude of effect?

In a Bonferrroni procedure, α is divided by the number of groups.

The post-hoc test which holds the familywise error rate at .05 by running each individual test at the c/alpha level (# comparisons/alpha) is the

In the analysis of variance with three groups the null hypothesis is

Fisher's LSD test is most useful when

Which of the following is a possible null hypothesis in an analysis of variance with 5 groups? ( H ₁: μ₁ ≠ μ₂ ≠ μ₃ ≠ μ₄ ≠ μ₅; H ₂: μ₁ ≠ μ₂ = μ₃ = μ₄ = μ₅)

In an analysis of variance summary table, the df for groups always equals

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

Exam 16: One-Way Analysis of Variance

When looking at multiple comparisons, the more tests that you run, the more likely that you will have a _______.

If η2 = .16, 4% of the variability in the dependent variable is attributable to group membership.

Which of the following is not a critical element of the analysis of variance?

Calculate η2 and ω 2 for the previous problem.

Answer the following questions based on this SPSS output. a. How many groups were compared? b. What was the total sample size? c. Was the ANOVA significant? d. Which groups are significantly different from one another? Explain the nature of the differences.

In the analysis of variance we will assume that

We can probably get away with violating assumptions if

We use the symbol to represent

dfgroup is the number of groups being compared in the ANOVA.

The major difference between t tests and the analysis of variance is that the latter

In evaluating the F in the analysis of variance, we need to know

Which of the following represents a measure of the magnitude of effect?

In a Bonferrroni procedure, α is divided by the number of groups.

The post-hoc test which holds the familywise error rate at .05 by running each individual test at the c/alpha level (# comparisons/alpha) is the

In the analysis of variance with three groups the null hypothesis is

Fisher's LSD test is most useful when

Which of the following is a possible null hypothesis in an analysis of variance with 5 groups? ( H 1: μ1 ≠ μ2 ≠ μ3 ≠ μ4 ≠ μ5; H 2: μ1 ≠ μ2 = μ3 = μ4 = μ5)

In an analysis of variance summary table, the df for groups always equals

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

If η² = .16, 4% of the variability in the dependent variable is attributable to group membership.

Calculate η² and ω ² for the previous problem.

df_group is the number of groups being compared in the ANOVA.

Which of the following is a possible null hypothesis in an analysis of variance with 5 groups? ( H ₁: μ₁ ≠ μ₂ ≠ μ₃ ≠ μ₄ ≠ μ₅; H ₂: μ₁ ≠ μ₂ = μ₃ = μ₄ = μ₅)