The two groups (pain relief, placebo) would be independent. But to have dependen
ID: 3221787 • Letter: T
Question
The two groups (pain relief, placebo) would be independent.
But to have dependent samples, or repeated measures, we would have to take at least 2 measurements from each subject.
When t-test and presented that are two types of samples. There is the dependent and independent samples. The dependent sample is based on a paired measurements for one. The independent samples are based off measurements that are made up of two different sets of items. But before any hypothesis is completed we must determine which would be best. An example of the two would be: Two test groups with both suffering from migraines. (this group would be considered dependent) Test group 1 is given medication to relive the pain, Test group 2 is given a placebo (this group would be independent).
For example, we would take some form of baseline reading, like blood pressure from all subject before a treatment is issued (drug or placebo). We would then take a second blood pressure reading from each subject at a later time, like 30 minutes. So these two measurements become the two dependent samples.
Does that make sense, why?
Explanation / Answer
Here in the given study, same participants are present in both groups where one group refers to all subject before a treatment is issued and the other group refers all subject after a treatment is issued.
This means that each participant has been studied on two occasions, that is, both the samples consists of same subjects, thus refering to dependent samples.
This makes significant to assume that the two sample involved in the study are dependent.
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