Question 1

A correlated groups t-test is used when_____.

Accepted Answer

A) the independent variable is between subjects 
B) the independent variable is within subjects 
C) when subjects are matched on a particular variable 
D) Both b & c 
E) all of these 
A) the independent variable is between subjects 
B) the independent variable is within subjects 
C) when subjects are matched on a particular variable 
D) Both b & c 
E) all of these

Question 2

With smaller sample sizes,larger population effect sizes are necessary to obtain adequate statistical power.

Accepted Answer

A) True 
 B)False

Question 3

It is typically the case that the estimated standard error for the correlated groups t test is larger than the estimated standard error for the independent groups t test.

Accepted Answer

A) True 
 B)False

Question 4

Dr.August is investigating whether or not women have more job satisfaction after they are given praise or a gift card (different levels or rewards).She has recruited 10 women from Intel and for 6 months the women received praise then the next 6 months they received a gift card.The conditions were counterbalanced and a survey on job satisfaction was distributed following the treatment conditions or every 6 months until the research was completed.After finishing her study Dr.August was busy writing a grant,therefore she has asked you to analyze her data below.Please note the survey was based on 1-5 Likert scale with high scores indicating high job satisfaction and low score indicating dissatisfaction.  
What is the calculated t-value for Dr.Augusts' data above?

Accepted Answer

A) 5.70 
B) 6.00 
C) 5.88 
D) 1.90 
A) 5.70 
B) 6.00 
C) 5.88 
D) 1.90

Question 5

The correlated-groups t test is robust to violations of the normality assumption if _____.

Accepted Answer

A) the data is measured on a quantitative scale 
B) there are homogeneous variances in the population 
C) the population of difference scores is large 
D) the sample size is relatively large 
A) the data is measured on a quantitative scale 
B) there are homogeneous variances in the population 
C) the population of difference scores is large 
D) the sample size is relatively large

Question 6

After analyze data using a correlated groups t-test the nature of the relationship is determined by comparing the mean scores in the 2 conditions.

Accepted Answer

A) True 
 B)False

Question 7

A reading readiness test is administered to 8 matched pairs of first graders.One child of each pair had 3 years of day care experience whereas the other child had none.The results of the test are shown in the following table.(Higher scores indicate greater readiness. )Assume á=.05,nondirectional test.  
The calculated t for this problem is _____.

Accepted Answer

A) .97 
B) 2.65 
C) .39 
D) 1.88 
A) .97 
B) 2.65 
C) .39 
D) 1.88

Question 8

In the correlated groups case,eta-squared represents the proportion of variability in the dependent variable that is associated with the independent variable after the variability due to _____ has been removed.

Accepted Answer

A) correlated errors 
B) individual differences 
C) all disturbance variables 
D) nullified scores 
A) correlated errors 
B) individual differences 
C) all disturbance variables 
D) nullified scores

Question 9

Dr.Hinson wants to investigate if rats fed a diet enriched with omega will do better at a maze learning task then when these same rats are given a normal diet.He has a total of 30 rats for his experiment.In Dr.Hinson's study if he is using a total of 30 rats what is his degrees of freedom?

Accepted Answer

A) 28 
B) 30 
C) 29 
D) 27 
A) 28 
B) 30 
C) 29 
D) 27

Question 10

A correlated groups t test is analogous to an independent groups t test with the effects of individual differences _____ the _____.

Accepted Answer

A) added to;standard error 
B) extracted from;independent variable 
C) extracted from;dependent variable 
D) extracted from;sample 
A) added to;standard error 
B) extracted from;independent variable 
C) extracted from;dependent variable 
D) extracted from;sample

Question 11

Dr.August is investigating whether or not women have more job satisfaction after they are given praise or a gift card (different levels or rewards).She has recruited 10 women from Intel and for 6 months the women received praise then the next 6 months they received a gift card.The conditions were counterbalanced and a survey on job satisfaction was distributed following the treatment conditions or every 6 months until the research was completed.After finishing her study Dr.August was busy writing a grant,therefore she has asked you to analyze her data below.Please note the survey was based on 1-5 Likert scale with high scores indicating high job satisfaction and low score indicating dissatisfaction.  
Should the confidence intervals be included in the results section?

Accepted Answer

A) Yes,they should be included 
B) no,this only pertains to independent groups t-test 
C) Yes,but only if the results are not statistically significant 
D) Both a & c 
A) Yes,they should be included 
B) no,this only pertains to independent groups t-test 
C) Yes,but only if the results are not statistically significant 
D) Both a & c

Question 12

Discuss the robustness of the correlated groups t test.

Accepted Answer

For the correlated groups t test,the ass

Question 13

An important advantage of the correlated groups t test over the independent groups t test relates to the control of confounding variables.

Accepted Answer

A) True 
 B)False

Question 14

In a correlated groups t-test the strength of the relationship as indicated by eta2 suggest that the proportion of ____________________ in the dependent variable that is associated with the independent variable after the variability related to individual differences has been excluded or taken out.

Accepted Answer

Question 15

In the correlated groups t test,eta-squared represents the proportion of variability in the dependent variable that is associated with the independent variable after variability due to individual differences has been included.

Accepted Answer

A) True 
 B)False

Question 16

One major source of "noise" in behavioral science data is the difference in backgrounds and abilities of the individuals participating in an investigation.

Accepted Answer

A) True 
 B)False

Question 17

A test's sensitivity can be defined as its ability to detect a relationship between variables when a relationship exists in the population.

Accepted Answer

A) True 
 B)False

Question 18

As the sample size increases in a correlated groups t-test in theory the sampling distribution of the mean of difference scores should____________________.

Accepted Answer

The answer of As the sample size increases in a...

Question 19

A correlated -groups t test can be used to analyze the relationship between two variables when _____.

Accepted Answer

A) the independent variable has only two levels 
B) the independent variable is within-subjects 
C) the dependent variable is measured on a ratio level 
D) all of these 
A) the independent variable has only two levels 
B) the independent variable is within-subjects 
C) the dependent variable is measured on a ratio level 
D) all of these

Question 20

Which of the following conditions would make it inappropriate to use a correlated-groups t test?

Accepted Answer

A) The dependent variable has been measured on an interval level. 
B) The dependent variable has been measured on a nominal level. 
C) The independent variable has been classified as nominal. 
D) The independent variable has only two levels. 
A) The dependent variable has been measured on an interval level. 
B) The dependent variable has been measured on a nominal level. 
C) The independent variable has been classified as nominal. 
D) The independent variable has only two levels.

A correlated groups t-test is used when_____.

With smaller sample sizes,larger population effect sizes are necessary to obtain adequate statistical power.

It is typically the case that the estimated standard error for the correlated groups t test is larger than the estimated standard error for the independent groups t test.

The correlated-groups t test is robust to violations of the normality assumption if _____.

After analyze data using a correlated groups t-test the nature of the relationship is determined by comparing the mean scores in the 2 conditions.

In the correlated groups case,eta-squared represents the proportion of variability in the dependent variable that is associated with the independent variable after the variability due to _____ has been removed.

Dr.Hinson wants to investigate if rats fed a diet enriched with omega will do better at a maze learning task then when these same rats are given a normal diet.He has a total of 30 rats for his experiment.In Dr.Hinson's study if he is using a total of 30 rats what is his degrees of freedom?

A correlated groups t test is analogous to an independent groups t test with the effects of individual differences _ the _.

Discuss the robustness of the correlated groups t test.

An important advantage of the correlated groups t test over the independent groups t test relates to the control of confounding variables.

In a correlated groups t-test the strength of the relationship as indicated by eta² suggest that the proportion of ____________________ in the dependent variable that is associated with the independent variable after the variability related to individual differences has been excluded or taken out.

In the correlated groups t test,eta-squared represents the proportion of variability in the dependent variable that is associated with the independent variable after variability due to individual differences has been included.

One major source of "noise" in behavioral science data is the difference in backgrounds and abilities of the individuals participating in an investigation.

A test's sensitivity can be defined as its ability to detect a relationship between variables when a relationship exists in the population.

As the sample size increases in a correlated groups t-test in theory the sampling distribution of the mean of difference scores should____________________.

A correlated -groups t test can be used to analyze the relationship between two variables when _____.

Which of the following conditions would make it inappropriate to use a correlated-groups t test?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 11: Correlated Groups T-Test

A correlated groups t-test is used when_____.

With smaller sample sizes,larger population effect sizes are necessary to obtain adequate statistical power.

It is typically the case that the estimated standard error for the correlated groups t test is larger than the estimated standard error for the independent groups t test.

The correlated-groups t test is robust to violations of the normality assumption if _____.

After analyze data using a correlated groups t-test the nature of the relationship is determined by comparing the mean scores in the 2 conditions.

In the correlated groups case,eta-squared represents the proportion of variability in the dependent variable that is associated with the independent variable after the variability due to _____ has been removed.

Dr.Hinson wants to investigate if rats fed a diet enriched with omega will do better at a maze learning task then when these same rats are given a normal diet.He has a total of 30 rats for his experiment.In Dr.Hinson's study if he is using a total of 30 rats what is his degrees of freedom?

A correlated groups t test is analogous to an independent groups t test with the effects of individual differences _____ the _____.

Discuss the robustness of the correlated groups t test.

An important advantage of the correlated groups t test over the independent groups t test relates to the control of confounding variables.

In a correlated groups t-test the strength of the relationship as indicated by eta2 suggest that the proportion of ____________________ in the dependent variable that is associated with the independent variable after the variability related to individual differences has been excluded or taken out.

In the correlated groups t test,eta-squared represents the proportion of variability in the dependent variable that is associated with the independent variable after variability due to individual differences has been included.

One major source of "noise" in behavioral science data is the difference in backgrounds and abilities of the individuals participating in an investigation.

A test's sensitivity can be defined as its ability to detect a relationship between variables when a relationship exists in the population.

As the sample size increases in a correlated groups t-test in theory the sampling distribution of the mean of difference scores should____________________.

A correlated -groups t test can be used to analyze the relationship between two variables when _____.

Which of the following conditions would make it inappropriate to use a correlated-groups t test?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Percentiles percentile Ranks standard Scores and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Measures of Central Tendency and Variability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Probability

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T -Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

A correlated groups t test is analogous to an independent groups t test with the effects of individual differences _ the _.

In a correlated groups t-test the strength of the relationship as indicated by eta² suggest that the proportion of ____________________ in the dependent variable that is associated with the independent variable after the variability related to individual differences has been excluded or taken out.