This question is concerned with determining whether two or more groups differ in some meaningful way on a particular variable or set of variables, and is often addressed using statistical tests such as t-tests, ANOVA, or regression analysis.
Gioacchino de Candia , this is another example of a recent phenomenon of people asking simple questions and then answering the questions themselves.
Although in this case, the answer is embedded in the question itself. You can see other examples from this poster here: https://www.researchgate.net/profile/Mamon-Hammad/questions
I have no idea why people do this, but I've been seeing this on ResearchGate recently.