The paired sample t-test, also known as the dependent sample t-test or matched sample t-test, is a statistical method used to compare the means of two related groups. Here’s a detailed explanation of when it can be used and its applications:
### When to Use a Paired Sample T-Test
1. **Related Groups**: The paired sample t-test is used when the samples are related or matched in some way. This is common in studies where the same subjects are