Exam 11: Correlated Groups T-Test

In most behavioral science research,the estimated standard error for the correlated groups t test is _____ than the estimated standard error for the independent groups t test applied to the same data.

The standard deviation of the sampling distribution of mean difference scores is referred to as the _____ of difference scores.

When using a correlated-groups t test design,we calculate the degrees of freedom using ______,where N= number of difference scores.

Which of the following statements describes a correlated-groups t test null hypothesis?

The analysis of the nature of the relationship for the _____ involves examination of the mean scores for the two conditions.

The mean of the sampling distribution of mean difference scores is equal to the _____ across individuals in the population.

The correlated groups t test is typically used to analyze the relationship between two variables when:

Using Appendix

When we fail to reject the null hypothesis,the question of the nature of the relationship is:

If the researcher suspects that the strength of the relationship between two variables in the population is .07,what sample size should she use per group in a study involving two correlated groups and an alpha level of .05,nondirectional test,in order to achieve a power of .70?

If we were to compute the average nullified score for each research participant,we would find that every person would have the same average score.

A sampling distribution of the mean of difference scores can be defined as a theoretical distribution consisting of mean difference scores across individuals for all possible random samples of a given size that could be selected from a population.

Usually,the correlated groups t test provides a _____ test of the relationship between the independent and dependent variables than does the independent groups t test.

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?

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 critical t for this problem is ______.

Within subjects designs have several advantages which include_____.

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 ______.

A correlated groups t-test provides a more sensitive test of the relationship between the independent and dependent variables.

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?

A sampling distribution of the mean of difference scores can be defined as a _____ distribution consisting of mean difference scores across individuals for all possible random samples of a given size that could be selected from a population.