Question 1

It is possible to obtain a large value of eta-squared without obtaining a statistically significant t value.

Accepted Answer

A) True 
 B)False

Question 2

Counterbalancing is a method to control for

Accepted Answer

A) small sample sizes. 
B) disturbance variables. 
C) confounding variables. 
D) low statistical power. 
A) small sample sizes. 
B) disturbance variables. 
C) confounding variables. 
D) low statistical power.

Question 3

Discuss the robustness of the correlated groups t test.

Accepted Answer

For the correlated groups t test,the ass

Question 4

Within subjects designs have several advantages which include_____.

Accepted Answer

A) a smaller sample size is needed 
B) a larger sample size is needed 
C) less disturbance variables 
D) Both a & c 
E) none of these 
A) a smaller sample size is needed 
B) a larger sample size is needed 
C) less disturbance variables 
D) Both a & c 
E) none of these

Question 5

An important advantage of the correlated groups t test over the independent groups t test relates to the control of:

Accepted Answer

A) random assignment 
B) disturbance variables 
C) confounding variables 
D) all of these 
A) random assignment 
B) disturbance variables 
C) confounding variables 
D) all of these

Question 6

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.What type of statistical test should Dr.Hinson use in analyze his data?

Accepted Answer

A) one-sample z test 
B) independent-groups t test 
C) correlated-groups t test 
D) Pearson correlation 
A) one-sample z test 
B) independent-groups t test 
C) correlated-groups t test 
D) Pearson correlation

Question 7

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.  
In Dr.Augusts' result section how should she report the results of the t-test you calculated for her?

Accepted Answer

A) t(9)= 1.90,p<0.05 
B) t(4)= 6.00 p<0.05 
C) t(5)= 5.88 p<0.05 
D) None of these 
A) t(9)= 1.90,p<0.05 
B) t(4)= 6.00 p<0.05 
C) t(5)= 5.88 p<0.05 
D) None of these

Question 8

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.  
Which of the following statements best describes results of Dr.Augusts' alternative hypothesis?

Accepted Answer

A) µ1=µ2 
B) µ1?µ2 
C) µ=0 
D) µ1>0 
A) µ1=µ2 
B) µ1?µ2 
C) µ=0 
D) µ1>0

Question 9

The variance extraction technique that creates nullified scores removes sources of variability that are due to _____.

Accepted Answer

A) individual differences 
B) confounding variables 
C) the dependent variable 
D) all of these 
A) individual differences 
B) confounding variables 
C) the dependent variable 
D) all of these

Question 10

If you were limited in the number of subjects you could recruit it would be more advantages to use a ____________________compared with an independent groups t-test.

Accepted Answer

Correlated

Question 11

In the correlated groups t test,the relevant t distribution has _____ degrees of freedom associated with it.

Accepted Answer

A) N 
B) N -1 
C) N - 2 
D) 0 
A) N 
B) N -1 
C) N - 2 
D) 0

Question 12

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 13

Which of the following conditions would preclude the use of a correlated-groups design?

Accepted Answer

A) small number of subjects 
B) the experimental manipulation has known carry-over effects 
C) the existence of individual differences 
D) the presence of disturbance variables 
A) small number of subjects 
B) the experimental manipulation has known carry-over effects 
C) the existence of individual differences 
D) the presence of disturbance variables

Question 14

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 strength of the relationship of the data above?

Accepted Answer

A) .90 
B) .80 
C) .88 
D) .76 
A) .90 
B) .80 
C) .88 
D) .76

Question 15

The interpretation of eta-squared for the correlated groups t test is the same as that for the independent groups t test.

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

If the sample size of a study is small and a high value of eta squared is observed,but there is no statistically significant effect of the independent variable on the dependent variable,we may conclude that ______.

Accepted Answer

A) a mistake has been made since you can't get a strong relationship when the t is nonsignificant 
B) unless a larger sample is used we can't be certain about the effects of the independent variable 
C) although the sample is small,the strong relationship indicates there is an effect due to the independent variable 
D) the nonsignificant finding should be taken as conclusive evidence of no effect of the independent variable 
A) a mistake has been made since you can't get a strong relationship when the t is nonsignificant 
B) unless a larger sample is used we can't be certain about the effects of the independent variable 
C) although the sample is small,the strong relationship indicates there is an effect due to the independent variable 
D) the nonsignificant finding should be taken as conclusive evidence of no effect of the independent variable

Question 18

There is less variability in a set of nullified scores because the effects of individual differences in background have been removed.

Accepted Answer

A) True 
 B)False

Question 19

If subjects have been matched on some variable such as IQ then a correlated groups t-test should be used to analyze the data.

Accepted Answer

A) True 
 B)False

Question 20

What is meant by the sensitivity of a statistical test?

Accepted Answer

The sensitivity of a statistic

It is possible to obtain a large value of eta-squared without obtaining a statistically significant t value.

Counterbalancing is a method to control for

Discuss the robustness of the correlated groups t test.

Within subjects designs have several advantages which include_____.

An important advantage of the correlated groups t test over the independent groups t test relates to the control of:

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.What type of statistical test should Dr.Hinson use in analyze his data?

The variance extraction technique that creates nullified scores removes sources of variability that are due to _____.

If you were limited in the number of subjects you could recruit it would be more advantages to use a ____________________compared with an independent groups t-test.

In the correlated groups t test,the relevant t distribution has _____ degrees of freedom associated with it.

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?

Which of the following conditions would preclude the use of a correlated-groups design?

The interpretation of eta-squared for the correlated groups t test is the same as that for the independent groups t test.

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

If the sample size of a study is small and a high value of eta squared is observed,but there is no statistically significant effect of the independent variable on the dependent variable,we may conclude that ______.

There is less variability in a set of nullified scores because the effects of individual differences in background have been removed.

If subjects have been matched on some variable such as IQ then a correlated groups t-test should be used to analyze the data.

What is meant by the sensitivity of a statistical test?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

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

It is possible to obtain a large value of eta-squared without obtaining a statistically significant t value.

Counterbalancing is a method to control for

Discuss the robustness of the correlated groups t test.

Within subjects designs have several advantages which include_____.

An important advantage of the correlated groups t test over the independent groups t test relates to the control of:

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.What type of statistical test should Dr.Hinson use in analyze his data?

The variance extraction technique that creates nullified scores removes sources of variability that are due to _____.

If you were limited in the number of subjects you could recruit it would be more advantages to use a ____________________compared with an independent groups t-test.

In the correlated groups t test,the relevant t distribution has _____ degrees of freedom associated with it.

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?

Which of the following conditions would preclude the use of a correlated-groups design?

The interpretation of eta-squared for the correlated groups t test is the same as that for the independent groups t test.

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

If the sample size of a study is small and a high value of eta squared is observed,but there is no statistically significant effect of the independent variable on the dependent variable,we may conclude that ______.

There is less variability in a set of nullified scores because the effects of individual differences in background have been removed.

If subjects have been matched on some variable such as IQ then a correlated groups t-test should be used to analyze the data.

What is meant by the sensitivity of a statistical test?

Introduction and Mathematical Preliminaries

Frequency and Probability Distributions

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

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