Dependent Samples t-tests - Exam 2

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6 Terms

1
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Dependent samples t-tests…

Compare two related samples to each other

2
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What are the assumptions of this test?

Independence of observations, normal distribution of the difference in pairs

3
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How can you test normality?

Shapiro-Wilk test, qq-plots, histograms

4
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What should you do if you violate normality?

Increase sample size or transform data using square root or logarithmic transformations

5
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What is an example of an alternative hypothesis for a dependent samples t-test?

Sample A is significantly greater/smaller in the dependent variable than sample B

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What are the steps for a dependent samples t-test?

They are the same as an independent samples t-test, but you don’t need to test for homogeneity of variance