Question 1

Eta-squared is often reported as    for an analysis of variance test.

Accepted Answer

A) True 
 B)False

Question 2

A researcher measures attractiveness ratings of a male confederate among 30 women who were told the confederate was either single,dating,or married (n = 10 per group).What are the degrees of freedom for error for the one-way between-subjects ANOVA?

Accepted Answer

A) 2 
B) 3 
C) 27 
D) 28 
A) 2 
B) 3 
C) 27 
D) 28

Question 3

Violating the assumption of homogeneity of variance tends to increase the likelihood of committing a Type I error.

Accepted Answer

A) True 
 B)False

Question 4

Which measure of proportion of variance tends to overestimate the size of an effect in a population?

Accepted Answer

A) eta-squared 
B) omega-squared 
C) none of the above 
A) eta-squared 
B) omega-squared 
C) none of the above

Question 5

Following a significant one-way between-subjects ANOVA in which k > 2,what is the next appropriate step?

Accepted Answer

A) Summarize the data;no further tests are required. 
B) Interpret the data;no further tests are required. 
C) Conduct post hoc tests. 
D) both A and B 
A) Summarize the data;no further tests are required. 
B) Interpret the data;no further tests are required. 
C) Conduct post hoc tests. 
D) both A and B

Question 6

To conduct a one-way between-subjects ANOVA,we assume that the samples were randomly selected from populations with equal variances,and that participants were independently observed in each group.

Accepted Answer

A) True 
 B)False

Question 7

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?

Accepted Answer

A) (2,12) 
B) (3,43) 
C) (2,42) 
D) (3,12) 
A) (2,12) 
B) (3,43) 
C) (2,42) 
D) (3,12)

Question 8

Which of the following is an assumption for computing a one-way between-subjects ANOVA?

Accepted Answer

A) The population being sampled from is normally distributed. 
B) Participants were selected to participate using a random procedure. 
C) One observation has no effect on the likelihood of another observation. 
D) all of the above 
A) The population being sampled from is normally distributed. 
B) Participants were selected to participate using a random procedure. 
C) One observation has no effect on the likelihood of another observation. 
D) all of the above

Question 9

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   = 30 and   = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

Accepted Answer

A) Reject the null hypothesis. 
B) Retain the null hypothesis. 
C) There is not enough information to answer this question. 
A) Reject the null hypothesis. 
B) Retain the null hypothesis. 
C) There is not enough information to answer this question.

Question 10

Which of the following is not a post hoc test for a one-way between-subjects ANOVA?

Accepted Answer

A) eta-squared 
B) Fisher's LSD test 
C) Tukey's HSD test 
D) Bonferroni test 
A) eta-squared 
B) Fisher's LSD test 
C) Tukey's HSD test 
D) Bonferroni test

Question 11

The degrees of freedom for error is called

Accepted Answer

A) degrees of freedom error 
B) degrees of freedom denominator 
C) degrees of freedom within-groups 
D) all of the above 
A) degrees of freedom error 
B) degrees of freedom denominator 
C) degrees of freedom within-groups 
D) all of the above

Question 12

A "one-way" between-subjects ANOVA is conducted when data are recorded in one group.

Accepted Answer

A) True 
 B)False

Question 13

To compute a mean square,we divide the sum of squares by degree of freedom for a given source of variation.

Accepted Answer

A) True 
 B)False

Question 14

Using a between-subjects ANOVA design,

Accepted Answer

A)    Participants are each observed one time 
B) n participants are observed k times 
C) data are not analyzed between groups 
D) the same participants are observed in each group 
A)    Participants are each observed one time 
B) n participants are observed k times 
C) data are not analyzed between groups 
D) the same participants are observed in each group

Question 15

A researcher notes that the variability attributed to difference between group means is quite large.Which source of variation is the researcher referring to?

Accepted Answer

A) between-persons 
B) within-groups 
C) between-groups 
D) error 
A) between-persons 
B) within-groups 
C) between-groups 
D) error

Question 16

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2;the sum of squares total is the same in both studies.Using eta-squared,in which study will the effect size be larger?

Accepted Answer

A) Study 1 
B) Study 2 
C) There is not enough information to answer this question. 
A) Study 1 
B) Study 2 
C) There is not enough information to answer this question.

Question 17

An ANOVA is used when samples are selected from two or more populations and when two or more samples are selected from the same population.

Accepted Answer

A) True 
 B)False

Question 18

All post hoc tests control for the effect size of a significant result.

Accepted Answer

A) True 
 B)False

Question 19

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?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 12 
A) 2 
B) 3 
C) 4 
D) 12

Question 20

There are two sources of variation in a one-way between-subjects ANOVA: one attributed to differences between groups and one attributed to error.

Accepted Answer

A) True 
 B)False

Eta-squared is often reported as for an analysis of variance test.

A researcher measures attractiveness ratings of a male confederate among 30 women who were told the confederate was either single,dating,or married (n = 10 per group).What are the degrees of freedom for error for the one-way between-subjects ANOVA?

Violating the assumption of homogeneity of variance tends to increase the likelihood of committing a Type I error.

Which measure of proportion of variance tends to overestimate the size of an effect in a population?

Following a significant one-way between-subjects ANOVA in which k > 2,what is the next appropriate step?

To conduct a one-way between-subjects ANOVA,we assume that the samples were randomly selected from populations with equal variances,and that participants were independently observed in each group.

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?

Which of the following is an assumption for computing a one-way between-subjects ANOVA?

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 = 30 and = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

Which of the following is not a post hoc test for a one-way between-subjects ANOVA?

The degrees of freedom for error is called

A "one-way" between-subjects ANOVA is conducted when data are recorded in one group.

To compute a mean square,we divide the sum of squares by degree of freedom for a given source of variation.

Using a between-subjects ANOVA design,

A researcher notes that the variability attributed to difference between group means is quite large.Which source of variation is the researcher referring to?

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2;the sum of squares total is the same in both studies.Using eta-squared,in which study will the effect size be larger?

An ANOVA is used when samples are selected from two or more populations and when two or more samples are selected from the same population.

All post hoc tests control for the effect size of a significant result.

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?

There are two sources of variation in a one-way between-subjects ANOVA: one attributed to differences between groups and one attributed to error.

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, Normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample and Two-Independent Sample T Tests

Testing Means: Related Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Within-Subjects Repeated Measures Design

Analysis of Variance: Two-Way Between-Subjects Factorial Design

Correlation

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Nonparametric Tests: Tests for Ordinal Data

Filters

Exam 12: Analysis of Variance: One-Way Between-Subjects Design

Eta-squared is often reported as for an analysis of variance test.

A researcher measures attractiveness ratings of a male confederate among 30 women who were told the confederate was either single,dating,or married (n = 10 per group).What are the degrees of freedom for error for the one-way between-subjects ANOVA?

Violating the assumption of homogeneity of variance tends to increase the likelihood of committing a Type I error.

Which measure of proportion of variance tends to overestimate the size of an effect in a population?

Following a significant one-way between-subjects ANOVA in which k > 2,what is the next appropriate step?

To conduct a one-way between-subjects ANOVA,we assume that the samples were randomly selected from populations with equal variances,and that participants were independently observed in each group.

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?

Which of the following is an assumption for computing a one-way between-subjects ANOVA?

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 = 30 and = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

Which of the following is not a post hoc test for a one-way between-subjects ANOVA?

The degrees of freedom for error is called

A "one-way" between-subjects ANOVA is conducted when data are recorded in one group.

To compute a mean square,we divide the sum of squares by degree of freedom for a given source of variation.

Using a between-subjects ANOVA design,

A researcher notes that the variability attributed to difference between group means is quite large.Which source of variation is the researcher referring to?

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2;the sum of squares total is the same in both studies.Using eta-squared,in which study will the effect size be larger?

An ANOVA is used when samples are selected from two or more populations and when two or more samples are selected from the same population.

All post hoc tests control for the effect size of a significant result.

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?

There are two sources of variation in a one-way between-subjects ANOVA: one attributed to differences between groups and one attributed to error.

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, Normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample and Two-Independent Sample T Tests

Testing Means: Related Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Within-Subjects Repeated Measures Design

Analysis of Variance: Two-Way Between-Subjects Factorial Design

Correlation

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Nonparametric Tests: Tests for Ordinal Data

Filters