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Topic:
When Should Independent or Dependent t Tests Be Used?
Essay Instructions:
Independent and dependent t tests are similar, but comparing two different groups and two groups with repeated measures (i.e., pre- or post-testing) serve very different purposes.
For this discussion, develop an original response proposing two hypothetical scenarios, as follows:
Name a dependent variable you could compare, for both an independent and dependent t test. (Do not use the variables in the Sample Dataset you are using for assignments.)
The independent t test should compare the dependent variable between two groups (i.e., divided by race, gender, socioeconomic class, or some other factor).
The dependent t test should be conducted on the same group (same sample, same data) where the dependent variable is measured twice (pre- and posttest).
Essay Sample Content Preview:
Comparing t-Test Scenarios
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Independent and dependent-t tests are important statistical tests appropriate for differing cases. The independent t-test is applied where the subjects under analysis are two completely different groups (Everitt & Howell, 2021). In contrast, the dependent or paired t-test is employed where analysis is made on the same group at two points.
Suppose we need to use it to compare average stress, which should be defined on a common scale, between two types of population, say high-SES and low-SES groups. Here, the dependent variable would be the level of stress (Everitt & Howell, 2021). At the same time, the independent t-test would be used to establish the null hypothesis, stating that no significant difference exists in stre...
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