Question 1

The assumptions for a related-samples t test are the same as those for the two-independent-sample t test.

Accepted Answer

A) True 
 B)False

Question 2

The related-samples t test makes tests concerning the difference between pairs of measured scores.

Accepted Answer

A) True 
 B)False

Question 3

A researcher conducts a study in which the population variance of difference scores between two groups is unknown.What type of t test is most appropriate for this study?

Accepted Answer

A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  there is not enough information to answer this question 
A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  there is not enough information to answer this question

Question 4

To summarize a related-samples t test,we report the test statistic,critical values,and p value.

Accepted Answer

A) True 
 B)False

Question 5

Participants can be matched through experimental manipulation or through natural occurrences to use the matched-pairs design.

Accepted Answer

A) True 
 B)False

Question 6

A researcher asks a sample of brothers and sisters to rate how positive their family environment was during childhood.In this study,the differences in ratings between each brother and sister pair were compared.The type of design described here is called a

Accepted Answer

A)  repeated-measures design. 
B)  matched-samples design. 
C)  repeated-measures design and matched-samples design. 
A)  repeated-measures design. 
B)  matched-samples design. 
C)  repeated-measures design and matched-samples design.

Question 7

Which of the following is the numerator of the test statistic for the related-samples t test?

Accepted Answer

A)  the sum of the difference scores for each participant 
B)  the value of the test statistic plus the degrees of freedom 
C)  the mean difference observed minus the mean difference stated in a null hypothesis 
D)  estimated standard error for difference scores 
A)  the sum of the difference scores for each participant 
B)  the value of the test statistic plus the degrees of freedom 
C)  the mean difference observed minus the mean difference stated in a null hypothesis 
D)  estimated standard error for difference scores

Question 8

The estimate for standard error is placed in the numerator of the test statistic for a related-samples t test.

Accepted Answer

A) True 
 B)False

Question 9

A researcher conducts a study in which different participants are independently observed within groups,and the same participants are observed between groups.If there are only two groups,then what type of t test is appropriate for this study?

Accepted Answer

A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  There is not enough information to answer this question. 
A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  There is not enough information to answer this question.

Question 10

Which of the following is a type of related-samples design in which different participants are observed in each group,but treated statistically as if they are the same persons in each group?

Accepted Answer

A)  repeated-measures design 
B)  matched-samples design 
C)  pre-post design 
D)  within-subjects design 
A)  repeated-measures design 
B)  matched-samples design 
C)  pre-post design 
D)  within-subjects design

Question 11

A researcher computes d = 0.12,which is a small effect size.

Accepted Answer

A) True 
 B)False

Question 12

Each of the following is an advantage for using the related-samples design,except

Accepted Answer

A)  it can be more practical. 
B)  it minimizes standard error. 
C)  it increases the power of a research design. 
D)  it increases the variability measured in a study. 
A)  it can be more practical. 
B)  it minimizes standard error. 
C)  it increases the power of a research design. 
D)  it increases the variability measured in a study.

Question 13

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class.If she computes a related-samples t test at a .05 level of significance (two-tailed test),then what are the critical values for this test?

Accepted Answer

A)  ±1.734 
B)  ±1.740 
C)  ±2.110 
D)  ±2.101 
A)  ±1.734 
B)  ±1.740 
C)  ±2.110 
D)  ±2.101

Question 14

If a related-samples t test is significant,then it will also be associated with a large effect size.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is the denominator of the test statistic for the related-samples t test?

Accepted Answer

A)  standard error 
B)  estimated standard error 
C)  estimated standard error for the difference 
D)  estimated standard error for difference scores 
A)  standard error 
B)  estimated standard error 
C)  estimated standard error for the difference 
D)  estimated standard error for difference scores

Question 16

A researcher measures deviant behavior in a sample of 12 children from abusive homes (Sample A).Another researcher measures the same behavior in a sample of 18 children from abusive homes (Sample B).Which sample is associated with larger degrees of freedom?

Accepted Answer

A)  Sample A 
B)  Sample B 
C)  Each sample has the same degrees of freedom. 
D)  There is not enough information to answer this question. 
A)  Sample A 
B)  Sample B 
C)  Each sample has the same degrees of freedom. 
D)  There is not enough information to answer this question.

Question 17

All other things being equal,as the sample size increases,what happens to the critical value for a related-samples t test (or for any t test,for that matter)?

Accepted Answer

A)  The critical value increases. 
B)  The critical value decreases. 
C)  The critical value does not change. 
D)  It depends on the value of the test statistic. 
A)  The critical value increases. 
B)  The critical value decreases. 
C)  The critical value does not change. 
D)  It depends on the value of the test statistic.

Question 18

One difference between a repeated-measures design and a matched-samples design is that

Accepted Answer

A)  only one design is a type of related-samples design. 
B)  only one design increases the power to observe an effect. 
C)  only one design involves observing the same participants in each group. 
D)  only one design eliminates between-persons variability. 
A)  only one design is a type of related-samples design. 
B)  only one design increases the power to observe an effect. 
C)  only one design involves observing the same participants in each group. 
D)  only one design eliminates between-persons variability.

Question 19

A professor compares scores on a competency exam among students at two times during a single semester.What type of t test is most appropriate for this study?

Accepted Answer

A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  there is not enough information to answer this question 
A)  one-sample t test 
B)  two-independent-sample t test 
C)  related-samples t test 
D)  there is not enough information to answer this question

Question 20

Which of the following is an assumption for computing the related-samples t test?

Accepted Answer

A)  The population being sampled from is normally distributed. 
B)  The population variance of difference scores is unknown. 
C)  Samples are related or matched between groups, but not within groups. 
D)  All of these. 
A)  The population being sampled from is normally distributed. 
B)  The population variance of difference scores is unknown. 
C)  Samples are related or matched between groups, but not within groups. 
D)  All of these.

The assumptions for a related-samples t test are the same as those for the two-independent-sample t test.

The related-samples t test makes tests concerning the difference between pairs of measured scores.

A researcher conducts a study in which the population variance of difference scores between two groups is unknown.What type of t test is most appropriate for this study?

To summarize a related-samples t test,we report the test statistic,critical values,and p value.

Participants can be matched through experimental manipulation or through natural occurrences to use the matched-pairs design.

A researcher asks a sample of brothers and sisters to rate how positive their family environment was during childhood.In this study,the differences in ratings between each brother and sister pair were compared.The type of design described here is called a

Which of the following is the numerator of the test statistic for the related-samples t test?

The estimate for standard error is placed in the numerator of the test statistic for a related-samples t test.

A researcher conducts a study in which different participants are independently observed within groups,and the same participants are observed between groups.If there are only two groups,then what type of t test is appropriate for this study?

Which of the following is a type of related-samples design in which different participants are observed in each group,but treated statistically as if they are the same persons in each group?

A researcher computes d = 0.12,which is a small effect size.

Each of the following is an advantage for using the related-samples design,except

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class.If she computes a related-samples t test at a .05 level of significance (two-tailed test),then what are the critical values for this test?

If a related-samples t test is significant,then it will also be associated with a large effect size.

Which of the following is the denominator of the test statistic for the related-samples t test?

A researcher measures deviant behavior in a sample of 12 children from abusive homes (Sample A).Another researcher measures the same behavior in a sample of 18 children from abusive homes (Sample B).Which sample is associated with larger degrees of freedom?

All other things being equal,as the sample size increases,what happens to the critical value for a related-samples t test (or for any t test,for that matter)?

One difference between a repeated-measures design and a matched-samples design is that

A professor compares scores on a competency exam among students at two times during a single semester.What type of t test is most appropriate for this study?

Which of the following is an assumption for computing the related-samples t test?

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

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

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 10: Testing Means: Truehe Related-Samples T Test

The assumptions for a related-samples t test are the same as those for the two-independent-sample t test.

The related-samples t test makes tests concerning the difference between pairs of measured scores.

A researcher conducts a study in which the population variance of difference scores between two groups is unknown.What type of t test is most appropriate for this study?

To summarize a related-samples t test,we report the test statistic,critical values,and p value.

Participants can be matched through experimental manipulation or through natural occurrences to use the matched-pairs design.

A researcher asks a sample of brothers and sisters to rate how positive their family environment was during childhood.In this study,the differences in ratings between each brother and sister pair were compared.The type of design described here is called a

Which of the following is the numerator of the test statistic for the related-samples t test?

The estimate for standard error is placed in the numerator of the test statistic for a related-samples t test.

A researcher conducts a study in which different participants are independently observed within groups,and the same participants are observed between groups.If there are only two groups,then what type of t test is appropriate for this study?

Which of the following is a type of related-samples design in which different participants are observed in each group,but treated statistically as if they are the same persons in each group?

A researcher computes d = 0.12,which is a small effect size.

Each of the following is an advantage for using the related-samples design,except

A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class.If she computes a related-samples t test at a .05 level of significance (two-tailed test),then what are the critical values for this test?

If a related-samples t test is significant,then it will also be associated with a large effect size.

Which of the following is the denominator of the test statistic for the related-samples t test?

A researcher measures deviant behavior in a sample of 12 children from abusive homes (Sample A).Another researcher measures the same behavior in a sample of 18 children from abusive homes (Sample B).Which sample is associated with larger degrees of freedom?

All other things being equal,as the sample size increases,what happens to the critical value for a related-samples t test (or for any t test,for that matter)?

One difference between a repeated-measures design and a matched-samples design is that

A professor compares scores on a competency exam among students at two times during a single semester.What type of t test is most appropriate for this study?

Which of the following is an assumption for computing the related-samples t test?

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

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

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