![]() The advantage of this second approach is the sample can be smaller. This is the approach used with paired samples. This is the approach with independent samples.Īnother approach is to take a sample of 20 people and have each person drink a glass of wine and take a memory test, and then have the same people drink a glass of beer and again take a memory test finally, we compare the results. ![]() Paired samples are also called matched samples or repeated measures.įor example, if you want to determine whether drinking a glass of wine or drinking a glass of beer has the same or different impact on memory, one approach is to take a sample of say 40 people, and have half of them drink a glass of wine and the other half drink a glass of beer, and then give each of the 40 people a memory test and compare results. Unlike the hypothesis testing studied so far, the two samples are not independent of one another. Each set of measurements is considered a sample. In paired sample hypothesis testing, a sample from the population is chosen and two measurements for each element in the sample are taken.
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