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Exam 11: Correlated Groups T-Test

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Question 51

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What is the difference between eta-squared for the correlated groups t test and eta-squared for the independent groups t test?

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Whereas eta-squared represents the propo...

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Question 52

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If the sample size is less than 15,the correlated groups t test may show inflated Type I errors for data that are:

A) normally distributed
B) cross-sectional
C) markedly skewed
D) markedly kurtotic

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Question 53

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

An important methodological problem to consider in a correlated-groups design is ______.

What is meant by the sensitivity of a statistical test?

If a researcher used a matched-subjects design,which of the following statistical tests should be used?

Although the correlated t test is usually a more powerful statistical test than the independent groups t test,one exception to this is

The formula for computing eta-squared from t and its degrees of freedom for the correlated groups t test is the same as that for the independent groups t test.

The ____________________in a correlated groups t-test is similar to the sampling distribution of the difference between two independent means in a independent groups t-test.

If we were to compute the average nullified score across conditions for each individual in a correlated groups study,we would find that every individual would have _____ average score(s) .

The dependent variable must be ____________________in nature if a correlated groups t-test is used.

The correlated groups t-test is only used when the independent variable is____________________.

If the sample size is less than 15,the correlated groups t test may show inflated Type I errors for data that are markedly skewed.

Why is the correlated groups t test usually more powerful than the independent groups t test?

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.If Dr.Hinson fails to implement the appropriate changes to his experiment a potential confound may be_____.

The major difference between the correlated groups t test and the independent groups t test is that the former is used when the independent variable is manipulated and the latter is used when the independent variable is observed.

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

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

If the effects of individual differences have not been removed from the raw scores,the eta² for the correlated-groups case would be _____ than if they have been removed,everything else being equal.

The degrees of freedom associated with correlated t-test is____________________.