Question 1

What statistic is used to assess the degree of association between two nominal variables?

Accepted Answer

A) The chi-square statistic 
B) Bivariate regression 
C) ANOVA 
D) Pearson's r 
A) The chi-square statistic 
B) Bivariate regression 
C) ANOVA 
D) Pearson's r A

Question 2

The ratio of the between-groups variance estimate to the within-groups variance estimate is indicated by

Accepted Answer

A) the F value. 
B) the degrees of freedom. 
C) the sum of squares. 
D) eta. 
A) the F value. 
B) the degrees of freedom. 
C) the sum of squares. 
D) eta. A

Question 3

If a correlation is positive, this indicates that __________ scores on one variable are associated with __________ scores on another variable.

Accepted Answer

A) low; high 
B) high; low 
C) high; high 
D) high; medium 
A) low; high 
B) high; low 
C) high; high 
D) high; medium C

Question 4

A researcher wanted to know if aggressive behavior was related to watching violent programs on TV.He selected some students and measured how many violent programs they watched per week (from 0 to 25) and how aggressive their behavior was (as rated on a 1 to 7 scale).What would be the most appropriate statistical analysis for these data?

Accepted Answer

A) Bivariate regression 
B) One-way analysis of variance 
C) Multiple regression 
D) Chi-square test for independence 
A) Bivariate regression 
B) One-way analysis of variance 
C) Multiple regression 
D) Chi-square test for independence

Question 5

Which of the following Pearson correlation coefficients indicates the strongest relationship between two variables?

Accepted Answer

A) .56 
B) -.81 
C) -.05 
D) .34 
A) .56 
B) -.81 
C) -.05 
D) .34

Question 6

If the F value indicates that the between-groups variance estimate is significantly greater than the within-groups variance estimate in an ANOVA, we can conclude that

Accepted Answer

A) there is random error. 
B) the group means are from the same population. 
C) the null hypothesis that the differences between the groups are due only to chance can be rejected. 
D) there was an error in the calculation. 
A) there is random error. 
B) the group means are from the same population. 
C) the null hypothesis that the differences between the groups are due only to chance can be rejected. 
D) there was an error in the calculation.

Question 7

For a 2 x 2 contingency table, the appropriate effect size statistic is

Accepted Answer

A) r. 
B) Cohen's kappa. 
C) Phi. 
D) Cramer's statistic. 
A) r. 
B) Cohen's kappa. 
C) Phi. 
D) Cramer's statistic.

Question 8

A researcher calculates a regression equation in order to

Accepted Answer

A) predict a score on a second variable from a known score on a first variable. 
B) determine the strength of the relationship between two nominal variables. 
C) predict the differences between scores on one variable from the scores on a second variable 
D) determine the causal relationship between two variables. 
A) predict a score on a second variable from a known score on a first variable. 
B) determine the strength of the relationship between two nominal variables. 
C) predict the differences between scores on one variable from the scores on a second variable 
D) determine the causal relationship between two variables.

Question 9

In a one-way ANOVA, eta is the measure of

Accepted Answer

A) effect size. 
B) mean square variance. 
C) statistical significance. 
D) the interaction. 
A) effect size. 
B) mean square variance. 
C) statistical significance. 
D) the interaction.

Question 10

The coefficient of determination indicates

Accepted Answer

A) the proportion of variance accounted for by the correlation coefficient. 
B) whether the null hypothesis can be rejected. 
C) whether the correlation is positive or negative. 
D) whether the population has been randomly sampled. 
A) the proportion of variance accounted for by the correlation coefficient. 
B) whether the null hypothesis can be rejected. 
C) whether the correlation is positive or negative. 
D) whether the population has been randomly sampled.

Question 11

Within-group variance in an ANOVA is considered to indicate

Accepted Answer

A) systematic error. 
B) differences among the group means. 
C) that the group means are from the same population. 
D) random error. 
A) systematic error. 
B) differences among the group means. 
C) that the group means are from the same population. 
D) random error.

Question 12

Kramer is conducting a chi-square analysis on a 2 x 2 contingency table.Which statistic should he use to calculate the effect size?

Accepted Answer

A) Kappa 
B) Alpha 
C) Phi 
D) r 
A) Kappa 
B) Alpha 
C) Phi 
D) r

Question 13

A negative correlation coefficient indicates that

Accepted Answer

A) there is no relationship between the variables. 
B) high scores on one variable are associated with low scores on the other variable. 
C) high scores on one variable are associated with high scores on the other variable. 
D) it was not calculated accurately. 
A) there is no relationship between the variables. 
B) high scores on one variable are associated with low scores on the other variable. 
C) high scores on one variable are associated with high scores on the other variable. 
D) it was not calculated accurately.

Question 14

As the value of r increases, the proportion of variability statistic

Accepted Answer

A) increases. 
B) decreases. 
C) does not change. 
D) may increase or decrease. 
A) increases. 
B) decreases. 
C) does not change. 
D) may increase or decrease.

Question 15

If r =1.00, then

Accepted Answer

A) all of the points on the scatterplot will fall on the line of best fit. 
B) there is a weak positive correlation. 
C) variable x causes variable y. 
D) the r will not be statistically significant. 
A) all of the points on the scatterplot will fall on the line of best fit. 
B) there is a weak positive correlation. 
C) variable x causes variable y. 
D) the r will not be statistically significant.

Question 16

The regression line measures

Accepted Answer

A) the overall effectiveness of the dependent variable. 
B) the ability to predict a correlation coefficient. 
C) the average effect size. 
D) the best possible prediction of the dependent variable 
A) the overall effectiveness of the dependent variable. 
B) the ability to predict a correlation coefficient. 
C) the average effect size. 
D) the best possible prediction of the dependent variable

Question 17

Which of the following statistical procedures could be used to measure the relationship between two quantitative variables?

Accepted Answer

A) Chi-square analysis 
B) One way ANOVA 
C) Contingency table analysis 
D) Bivariate regression 
A) Chi-square analysis 
B) One way ANOVA 
C) Contingency table analysis 
D) Bivariate regression

Question 18

If the F value indicates that the between-groups variance is not significantly greater than the within-groups variance in an ANOVA, we can conclude that

Accepted Answer

A) there is random error. 
B) the group means are from the same population. 
C) the null hypothesis that the differences between the groups are due only to chance can be rejected. 
D) there was an error in the calculation. 
A) there is random error. 
B) the group means are from the same population. 
C) the null hypothesis that the differences between the groups are due only to chance can be rejected. 
D) there was an error in the calculation.

Question 19

Researcher Jones is interested in assessing the relationship between sex of participant and helping behavior (whether the person helped or did not help).Which of the following statistics should be used?

Accepted Answer

A) Chi-square statistic 
B) Kappa 
C) Bivariate regression 
D) Pearson's r 
A) Chi-square statistic 
B) Kappa 
C) Bivariate regression 
D) Pearson's r

Question 20

In a one-way ANOVA the grand mean is defined as

Accepted Answer

A) the between groups variance. 
B) the means across all of the participants in the study. 
C) only the means from the control group. 
D) n times the degrees of freedom. 
A) the between groups variance. 
B) the means across all of the participants in the study. 
C) only the means from the control group. 
D) n times the degrees of freedom.

What statistic is used to assess the degree of association between two nominal variables?

The ratio of the between-groups variance estimate to the within-groups variance estimate is indicated by

If a correlation is positive, this indicates that scores on one variable are associated with scores on another variable.

Which of the following Pearson correlation coefficients indicates the strongest relationship between two variables?

If the F value indicates that the between-groups variance estimate is significantly greater than the within-groups variance estimate in an ANOVA, we can conclude that

For a 2 x 2 contingency table, the appropriate effect size statistic is

A researcher calculates a regression equation in order to

In a one-way ANOVA, eta is the measure of

The coefficient of determination indicates

Within-group variance in an ANOVA is considered to indicate

Kramer is conducting a chi-square analysis on a 2 x 2 contingency table.Which statistic should he use to calculate the effect size?

A negative correlation coefficient indicates that

As the value of r increases, the proportion of variability statistic

If r =1.00, then

The regression line measures

Which of the following statistical procedures could be used to measure the relationship between two quantitative variables?

If the F value indicates that the between-groups variance is not significantly greater than the within-groups variance in an ANOVA, we can conclude that

Researcher Jones is interested in assessing the relationship between sex of participant and helping behavior (whether the person helped or did not help).Which of the following statistics should be used?

In a one-way ANOVA the grand mean is defined as

Introduction to Research and Research Designs

The Research Hypothesis

Ethics in Research

Measures

Reliability and Validity

Surveys and Sampling

Naturalistic Methods

Hypothesis Testing and Inferential Statistics

Correlational Research Designs

Experimental Research: One-Way Designs

Experimental Research: Factorial Designs

Experimental Control and Internal Validity

External Validity

Quasi-Experimental Research Designs

Reporting Research Results

Data Preparation and Univariate Statistics

Multivariate Statistics

Filters

Exam 17: Bivariate Statistics

What statistic is used to assess the degree of association between two nominal variables?

The ratio of the between-groups variance estimate to the within-groups variance estimate is indicated by

If a correlation is positive, this indicates that __________ scores on one variable are associated with __________ scores on another variable.

Which of the following Pearson correlation coefficients indicates the strongest relationship between two variables?

If the F value indicates that the between-groups variance estimate is significantly greater than the within-groups variance estimate in an ANOVA, we can conclude that

For a 2 x 2 contingency table, the appropriate effect size statistic is

A researcher calculates a regression equation in order to

In a one-way ANOVA, eta is the measure of

The coefficient of determination indicates

Within-group variance in an ANOVA is considered to indicate

Kramer is conducting a chi-square analysis on a 2 x 2 contingency table.Which statistic should he use to calculate the effect size?

A negative correlation coefficient indicates that

As the value of r increases, the proportion of variability statistic

If r =1.00, then

The regression line measures

Which of the following statistical procedures could be used to measure the relationship between two quantitative variables?

If the F value indicates that the between-groups variance is not significantly greater than the within-groups variance in an ANOVA, we can conclude that

Researcher Jones is interested in assessing the relationship between sex of participant and helping behavior (whether the person helped or did not help).Which of the following statistics should be used?

In a one-way ANOVA the grand mean is defined as

Introduction to Research and Research Designs

The Research Hypothesis

Ethics in Research

Measures

Reliability and Validity

Surveys and Sampling

Naturalistic Methods

Hypothesis Testing and Inferential Statistics

Correlational Research Designs

Experimental Research: One-Way Designs

Experimental Research: Factorial Designs

Experimental Control and Internal Validity

External Validity

Quasi-Experimental Research Designs

Reporting Research Results

Data Preparation and Univariate Statistics

Multivariate Statistics

Filters

If a correlation is positive, this indicates that scores on one variable are associated with scores on another variable.