Question 1

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

Accepted Answer

A) $\eta$2 
B)  $\omega$2 
C)  none of these 
A) $\eta$2 
B)  $\omega$2 
C)  none of these A

Question 2

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

Accepted Answer

A) True 
 B)False  False

Question 3

A researcher conducts a study in which k = 5 and N = 80.What are the degrees of freedom between groups for the one-way between-subjects ANOVA?

Accepted Answer

A)  4 
B)  5 
C)  75 
D)  395 
A)  4 
B)  5 
C)  75 
D)  395 A

Question 4

A researcher randomly assigned N = 16 rodents to experience one of four levels of shock (n = 4 per group)following the illumination of a visual cue.If SSBG = 24 and SSE = 48,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 5

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

Accepted Answer

A)  the number of factors in the design 
B)  the number of statistical tests in the design 
C)  the number of ways that the data can be analyzed 
D)  the direction that the traffic should follow on a road 
A)  the number of factors in the design 
B)  the number of statistical tests in the design 
C)  the number of ways that the data can be analyzed 
D)  the direction that the traffic should follow on a road

Question 6

An analysis of variance is a statistical procedure used to test hypotheses for one or more factors concerning the variance among two or more group means,where the variance in one or more populations is unknown.

Accepted Answer

A) True 
 B)False

Question 7

How does $\omega$2 for the one-way between-subjects ANOVA correct for the fact that $\eta$2 tends to be a biased estimate of effect size?

Accepted Answer

A)  It corrects for the size of error by including MSE in the formula. 
B)  It includes the degrees of freedom between groups (dfBG) in the formula. 
C)  It accounts for the number of groups that were observed. 
D)  All of these. 
A)  It corrects for the size of error by including MSE in the formula. 
B)  It includes the degrees of freedom between groups (dfBG) in the formula. 
C)  It accounts for the number of groups that were observed. 
D)  All of these.

Question 8

A researcher computes the following one-way between-subjects ANOVA table for a study where k = 3 and n = 12.State the decision at a .05 level of significance.(Hint: Complete the table first.)

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 9

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 these 
A)  degrees of freedom error 
B)  degrees of freedom denominator 
C)  degrees of freedom within groups 
D)  all of these

Question 10

The degrees of freedom total for a one-way between-subjects ANOVA is the total sample size minus one.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following post hoc tests is associated with the least power to detect an effect?

Accepted Answer

A)  Fisher's LSD test 
B)  Tukey's HSD test 
C)  Studentized Newman-Keuls 
D)  none; each post hoc test is associated with the same power to detect an effect 
A)  Fisher's LSD test 
B)  Tukey's HSD test 
C)  Studentized Newman-Keuls 
D)  none; each post hoc test is associated with the same power to detect an effect

Question 12

The numerator of the test statistic for a one-way between-subjects ANOVA is the mean variability associated with error.

Accepted Answer

A) True 
 B)False

Question 13

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 these. 
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 these.

Question 14

A significant ANOVA indicates that all pairs of group means significantly differ.

Accepted Answer

A) True 
 B)False

Question 15

A researcher measures differences in recall between male and female participants following a romantic movie clip.If different participants were in each group,then what type of statistical design is appropriate for this study?

Accepted Answer

A)  a two-independent-sample t test 
B)  a one-way between-subjects ANOVA 
C)  a two-way between-subjects ANOVA 
D)  a two-independent-sample t test and a one-way between-subjects ANOVA 
A)  a two-independent-sample t test 
B)  a one-way between-subjects ANOVA 
C)  a two-way between-subjects ANOVA 
D)  a two-independent-sample t test and a one-way between-subjects ANOVA

Question 16

A post hoc test is only necessary following a decision to retain the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 17

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

Accepted Answer

A)  different participants are observed one time in each of two or more groups for one factor 
B)  the same participants are observed in each of two or more groups for one factor 
C)  the levels of one or more factors are manipulated 
D)  all of the above 
A)  different participants are observed one time in each of two or more groups for one factor 
B)  the same participants are observed in each of two or more groups for one factor 
C)  the levels of one or more factors are manipulated 
D)  all of the above

Question 18

A researcher conducts a study in which k = 6 and n = 6 per group.What are the critical values for the one-way between-subjects ANOVA at a .05 level of significance?

Accepted Answer

A)  3.70 
B)  3.47 
C)  2.53 
D)  2.42 
A)  3.70 
B)  3.47 
C)  2.53 
D)  2.42

Question 19

A professor compared differences in class grades between students in their freshman,sophomore,junior,and senior years of college.If different participants were in each group,then what type of statistical design is appropriate for this study?

Accepted Answer

A)  a two-independent-sample t test 
B)  a one-way between-subjects ANOVA 
C)  a two-way between-subjects ANOVA 
D)  a two-independent-sample t test and a one-way between-subjects ANOVA 
A)  a two-independent-sample t test 
B)  a one-way between-subjects ANOVA 
C)  a two-way between-subjects ANOVA 
D)  a two-independent-sample t test and a one-way between-subjects ANOVA

Question 20

A researcher conducts a study in which k = 4 and n = 22 in each group.What are the degrees of freedom for the one-way between-subjects ANOVA?

Accepted Answer

A)  (3, 84) 
B)  (4, 88) 
C)  (4, 22) 
D)  (3, 18) 
A)  (3, 84) 
B)  (4, 88) 
C)  (4, 22) 
D)  (3, 18)

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

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

A researcher conducts a study in which k = 5 and N = 80.What are the degrees of freedom between groups for the one-way between-subjects ANOVA?

A researcher randomly assigned N = 16 rodents to experience one of four levels of shock (n = 4 per group)following the illumination of a visual cue.If SS_BG = 24 and SS_E = 48,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

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

An analysis of variance is a statistical procedure used to test hypotheses for one or more factors concerning the variance among two or more group means,where the variance in one or more populations is unknown.

How does $\omega$ ² for the one-way between-subjects ANOVA correct for the fact that $\eta$ ² tends to be a biased estimate of effect size?

A researcher computes the following one-way between-subjects ANOVA table for a study where k = 3 and n = 12.State the decision at a .05 level of significance.(Hint: Complete the table first.)

The degrees of freedom for error is called ______.

The degrees of freedom total for a one-way between-subjects ANOVA is the total sample size minus one.

Which of the following post hoc tests is associated with the least power to detect an effect?

The numerator of the test statistic for a one-way between-subjects ANOVA is the mean variability associated with error.

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

A significant ANOVA indicates that all pairs of group means significantly differ.

A researcher measures differences in recall between male and female participants following a romantic movie clip.If different participants were in each group,then what type of statistical design is appropriate for this study?

A post hoc test is only necessary following a decision to retain the null hypothesis.

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

A researcher conducts a study in which k = 6 and n = 6 per group.What are the critical values for the one-way between-subjects ANOVA at a .05 level of significance?

A professor compared differences in class grades between students in their freshman,sophomore,junior,and senior years of college.If different participants were in each group,then what type of statistical design is appropriate for this study?

A researcher conducts a study in which k = 4 and n = 22 in each group.What are the degrees of freedom for the one-way between-subjects ANOVA?

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: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

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

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

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

A researcher conducts a study in which k = 5 and N = 80.What are the degrees of freedom between groups for the one-way between-subjects ANOVA?

A researcher randomly assigned N = 16 rodents to experience one of four levels of shock (n = 4 per group)following the illumination of a visual cue.If SSBG = 24 and SSE = 48,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

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

An analysis of variance is a statistical procedure used to test hypotheses for one or more factors concerning the variance among two or more group means,where the variance in one or more populations is unknown.

How does ω\omegaω 2 for the one-way between-subjects ANOVA correct for the fact that η\etaη 2 tends to be a biased estimate of effect size?

A researcher computes the following one-way between-subjects ANOVA table for a study where k = 3 and n = 12.State the decision at a .05 level of significance.(Hint: Complete the table first.)

The degrees of freedom for error is called ______.

The degrees of freedom total for a one-way between-subjects ANOVA is the total sample size minus one.

Which of the following post hoc tests is associated with the least power to detect an effect?

The numerator of the test statistic for a one-way between-subjects ANOVA is the mean variability associated with error.

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

A significant ANOVA indicates that all pairs of group means significantly differ.

A researcher measures differences in recall between male and female participants following a romantic movie clip.If different participants were in each group,then what type of statistical design is appropriate for this study?

A post hoc test is only necessary following a decision to retain the null hypothesis.

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

A researcher conducts a study in which k = 6 and n = 6 per group.What are the critical values for the one-way between-subjects ANOVA at a .05 level of significance?

A professor compared differences in class grades between students in their freshman,sophomore,junior,and senior years of college.If different participants were in each group,then what type of statistical design is appropriate for this study?

A researcher conducts a study in which k = 4 and n = 22 in each group.What are the degrees of freedom for the one-way between-subjects ANOVA?

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: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

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

A researcher randomly assigned N = 16 rodents to experience one of four levels of shock (n = 4 per group)following the illumination of a visual cue.If SS_BG = 24 and SS_E = 48,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

How does $\omega$ ² for the one-way between-subjects ANOVA correct for the fact that $\eta$ ² tends to be a biased estimate of effect size?