Here’s a quick example:
Let’s say you’re an educator and you want to know who performs better in graduate school tests – students who came to grad school straight from college or those who worked first?
You go to a graduate school and ask for the test scores from each class. Here’s what you get from the school:
|Students with work experience||Students without work experience|
|Class||Average Score||# of students in class||Average Score||# of students in class|
How do you use this information to answer your question?