Question 1

A "statistically significant" finding is generally reported as

Accepted Answer

A) proving the researcher's hypothesis. 
B) proving that the null hypothesis is false. 
C) supporting the researcher's hypothesis. 
D) proving that the null hypothesis is true. 
A) proving the researcher's hypothesis. 
B) proving that the null hypothesis is false. 
C) supporting the researcher's hypothesis. 
D) proving that the null hypothesis is true.

Question 2

Confidence intervals drawn around group means in a complex design provide information regarding

Accepted Answer

A) the null hypothesis. 
B) the probable pattern of population means. 
C) interaction effects. 
D) the statistical significance of any differences among population means. 
A) the null hypothesis. 
B) the probable pattern of population means. 
C) interaction effects. 
D) the statistical significance of any differences among population means.

Question 3

Following an omnibus F-test a researcher may learn about specific sources of systematic variation in a single-factor experiment by performing

Accepted Answer

A) another F-test. 
B) comparisons of two means. 
C) correlation coefficients. 
D) correlational analyses. 
A) another F-test. 
B) comparisons of two means. 
C) correlation coefficients. 
D) correlational analyses.

Question 4

The ANOVA Summary Table for a two-factor,mixed design is divided into two parts;the between subjects section and the __________ section.

Accepted Answer

A) within-subjects 
B) interaction 
C) eta-squared 
D) repeated-subjects 
A) within-subjects 
B) interaction 
C) eta-squared 
D) repeated-subjects

Question 5

The primary way that analysis of variance for repeated measures differs from that for an independent groups design is in the estimation of

Accepted Answer

A) between-group variation. 
B) variability between means. 
C) error variation. 
D) systematic variation. 
A) between-group variation. 
B) variability between means. 
C) error variation. 
D) systematic variation.

Question 6

Figure:
Read the following research report and answer the questions that follow.
A researcher compares men's and women's attitudes toward dating their best friend's former girl/boy friend.Specifically,college students are asked to read a story describing a situation in which their best friend breaks up with a partner and they later have an opportunity to date their best friend's former partner.Men and women rate the likelihood they would choose to date their best friend's former partner using a 10-point scale (0 = not at all likely and 9 = completely likely).In addition,participants rate the extent to which a similar situation has occurred to them using a 10-point scale (0 = not at all and 9 = completely).The results of this study are presented below:  
-What do the p values associated with each t-test tell you besides whether the result is statistically significant?

Accepted Answer

The smaller the p value the greater the

Question 7

In general,a repeated measures design is likely to be ________ than a random groups design.

Accepted Answer

A) less sensitive 
B) more sensitive 
C) more accurate 
D) less powerful 
A) less sensitive 
B) more sensitive 
C) more accurate 
D) less powerful

Question 8

= 7.30,p = .01.On the basis of this information we may conclude that

Accepted Answer

A) there were two independent groups in the experiment. 
B) there were 42 total subjects in the experiment. 
C) the results are statistically significant. 
D) all of these 
A) there were two independent groups in the experiment. 
B) there were 42 total subjects in the experiment. 
C) the results are statistically significant. 
D) all of these

Question 9

If the omnibus analysis of variance for a complex design reveals a statistically significant interaction effect,the source of the interaction effect may be identified using simple main effects analyses and,when there are more than two levels of an independent variable,also

Accepted Answer

A) complex comparisons. 
B) null comparisons. 
C) simple correlations between variables. 
D) comparisons between two means. 
A) complex comparisons. 
B) null comparisons. 
C) simple correlations between variables. 
D) comparisons between two means.

Question 10

Figure:
Read the following research report and answer the questions that follow.
A researcher compares men's and women's attitudes toward dating their best friend's former girl/boy friend.Specifically,college students are asked to read a story describing a situation in which their best friend breaks up with a partner and they later have an opportunity to date their best friend's former partner.Men and women rate the likelihood they would choose to date their best friend's former partner using a 10-point scale (0 = not at all likely and 9 = completely likely).In addition,participants rate the extent to which a similar situation has occurred to them using a 10-point scale (0 = not at all and 9 = completely).The results of this study are presented below:  
-How many men and women were there in this study (assuming equal numbers of men and women)?

Accepted Answer

We know there were 3

Question 11

The expected value of the F-statistic when the null hypothesis is true is

Accepted Answer

A) 1.00 
B) .50. 
C) .05 
D) 0.0. 
A) 1.00 
B) .50. 
C) .05 
D) 0.0.

Question 12

Figure:
Use the ANOVA Summary Table to answer the questions that follow:  
-How many levels are there for Factor A and Factor B?

Accepted Answer

Factor A h

Question 13

Explain the difference between experimental sensitivity and statistical power and identify factors that influence each.

Accepted Answer

Sensitivity refers to the likelihood tha

Question 14

Results that are "statistically significant" may not be of interest to the scientific community because

Accepted Answer

A) the study's methodology was poor. 
B) the results have little external validity. 
C) the treatment effect is too small to be of practical value. 
D) any of these reasons 
A) the study's methodology was poor. 
B) the results have little external validity. 
C) the treatment effect is too small to be of practical value. 
D) any of these reasons

Question 15

A result that is not "statistically significant" means that

Accepted Answer

A) the null hypothesis is definitely false. 
B) the null hypothesis is definitely true. 
C) we should conclude that the independent variable had no effect whatsoever. 
D) without more information,we should be cautious about concluding that the independent variable had more than a trivial effect. 
A) the null hypothesis is definitely false. 
B) the null hypothesis is definitely true. 
C) we should conclude that the independent variable had no effect whatsoever. 
D) without more information,we should be cautious about concluding that the independent variable had more than a trivial effect.

Question 16

Null hypothesis significance testing is used to compare two means in an independent groups design.(a)What is the null hypothesis? (b)What is required to "reject" the null hypothesis?

Accepted Answer

(a)The null hypothesis when two means ar

Question 17

The results of an omnibus F-test for a complex design experiment allow the researcher to

Accepted Answer

A) know exactly which means significantly differ from one another. 
B) interpret the outcome of the experiment without knowing the descriptive statistics for the cells of the design. 
C) know the strength of the relationships between the independent and dependent variables. 
D) know whether the interaction effects and main effects were statistically significant. 
A) know exactly which means significantly differ from one another. 
B) interpret the outcome of the experiment without knowing the descriptive statistics for the cells of the design. 
C) know the strength of the relationships between the independent and dependent variables. 
D) know whether the interaction effects and main effects were statistically significant.

Question 18

Figure:
Read the following research report and answer the questions that follow.
A researcher compares men's and women's attitudes toward dating their best friend's former girl/boy friend.Specifically,college students are asked to read a story describing a situation in which their best friend breaks up with a partner and they later have an opportunity to date their best friend's former partner.Men and women rate the likelihood they would choose to date their best friend's former partner using a 10-point scale (0 = not at all likely and 9 = completely likely).In addition,participants rate the extent to which a similar situation has occurred to them using a 10-point scale (0 = not at all and 9 = completely).The results of this study are presented below:  
-)The square root of 28 (the df)is approximately 5.3.What is Cohen's d for the difference between ratings for men and women for the question regarding the likelihood of dating? According to Cohen's criteria,how would you describe this effect?

Accepted Answer

The formula for computing d ba

Question 19

The F-test provides a statistic that represents the ratio of between-group variation in the data to

Accepted Answer

A) sample size. 
B) total variation in the data. 
C) degrees of freedom. 
D) within-group variation. 
A) sample size. 
B) total variation in the data. 
C) degrees of freedom. 
D) within-group variation.

Question 20

The appropriate inferential test when each subject participates in both conditions of an experiment is

Accepted Answer

A) a between-subjects t-test. 
B) a between-conditions t-test. 
C) a repeated measures t-test. 
D) a t-test for independent groups. 
A) a between-subjects t-test. 
B) a between-conditions t-test. 
C) a repeated measures t-test. 
D) a t-test for independent groups.

A "statistically significant" finding is generally reported as

Confidence intervals drawn around group means in a complex design provide information regarding

Following an omnibus F-test a researcher may learn about specific sources of systematic variation in a single-factor experiment by performing

The ANOVA Summary Table for a two-factor,mixed design is divided into two parts;the between subjects section and the __________ section.

The primary way that analysis of variance for repeated measures differs from that for an independent groups design is in the estimation of

In general,a repeated measures design is likely to be ________ than a random groups design.

= 7.30,p = .01.On the basis of this information we may conclude that

If the omnibus analysis of variance for a complex design reveals a statistically significant interaction effect,the source of the interaction effect may be identified using simple main effects analyses and,when there are more than two levels of an independent variable,also

The expected value of the F-statistic when the null hypothesis is true is

Figure: Use the ANOVA Summary Table to answer the questions that follow: -How many levels are there for Factor A and Factor B?

Explain the difference between experimental sensitivity and statistical power and identify factors that influence each.

Results that are "statistically significant" may not be of interest to the scientific community because

A result that is not "statistically significant" means that

Null hypothesis significance testing is used to compare two means in an independent groups design.(a)What is the null hypothesis? (b)What is required to "reject" the null hypothesis?

The results of an omnibus F-test for a complex design experiment allow the researcher to

The F-test provides a statistic that represents the ratio of between-group variation in the data to

The appropriate inferential test when each subject participates in both conditions of an experiment is

Introduction

The Scientifi C Method

Ethical Issues in the Conduct of Psychological Research

Observation

Survey Research

Independent Groups Designs

Repeated Measures Designs

Complex Designs

Single-Case Designs and Small-N Research

Quasi-Experimental Designs and Program Evaluation

Data Analysis and Interpretation: Part I Describing Data,confi Dence Intervals, Correlation

Communication in Psychology

Filters

Exam 12: Data Analysis and Interpretation: Part II Tests of Statisticalsignifi Cance and the Analysis Story

A "statistically significant" finding is generally reported as

Confidence intervals drawn around group means in a complex design provide information regarding

Following an omnibus F-test a researcher may learn about specific sources of systematic variation in a single-factor experiment by performing

The ANOVA Summary Table for a two-factor,mixed design is divided into two parts;the between subjects section and the __________ section.

The primary way that analysis of variance for repeated measures differs from that for an independent groups design is in the estimation of

In general,a repeated measures design is likely to be ________ than a random groups design.

= 7.30,p = .01.On the basis of this information we may conclude that

If the omnibus analysis of variance for a complex design reveals a statistically significant interaction effect,the source of the interaction effect may be identified using simple main effects analyses and,when there are more than two levels of an independent variable,also

The expected value of the F-statistic when the null hypothesis is true is

Figure: Use the ANOVA Summary Table to answer the questions that follow: -How many levels are there for Factor A and Factor B?

Explain the difference between experimental sensitivity and statistical power and identify factors that influence each.

Results that are "statistically significant" may not be of interest to the scientific community because

A result that is not "statistically significant" means that

Null hypothesis significance testing is used to compare two means in an independent groups design.(a)What is the null hypothesis? (b)What is required to "reject" the null hypothesis?

The results of an omnibus F-test for a complex design experiment allow the researcher to

The F-test provides a statistic that represents the ratio of between-group variation in the data to

The appropriate inferential test when each subject participates in both conditions of an experiment is

Introduction

The Scientifi C Method

Ethical Issues in the Conduct of Psychological Research

Observation

Survey Research

Independent Groups Designs

Repeated Measures Designs

Complex Designs

Single-Case Designs and Small-N Research

Quasi-Experimental Designs and Program Evaluation

Data Analysis and Interpretation: Part I Describing Data,confi Dence Intervals, Correlation

Communication in Psychology

Filters