Statistics

When to Use t-test versus Correlation in Data Analysis

Since both correlation and t-test are about relationships between X and Y, what is the difference between them and when do you use t-test (or correlation)? This tutorial aims to answer these two questions. The following figure presents the difference between t-test and correlation. In particular, t-test deals with situations where X is a binary … Read more

What is the Difference between Independent and Paired Sample t-test

This tutorial explains what t-test is, and the difference between independent sample t-test and paired sample t-test. It also explains what two-sample and one-sample t-test are. What is independent sample t-test? Indepdent sample t-test examines whether the means from 2 separate groups of people or objects are statistically significantly different. That is, we calculate two … Read more