To compare the mean of two independent groups, the unpaired two-samples t-test is utilised. Assume we've measured the weight of 100 people: 50 women (group A) and 50 men (group B) (group B). We want to know if women's average weight (mA) differs significantly from men's (mB).
Paired sample t-test used to test two paired sample means
An unpaired t-test (also known as an independent t-test) examines the averages/means of two independent or unrelated groups to see if there is a statistically significant difference between them.
The two-sample t-test (also known as the independent samples t-test) is a statistical approach for determining if two groups' unknown population means are equal.
The unpaired t test compares the difference in means to the standard error of the difference, which is calculated by combining the two groups' standard errors. If the data are paired or matched, a paired t test should be used instead.
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