Hi all!

The new semester just started and I'm following Chemiometrics courses online, due to the lockdown.

One of the first topics the Professor talked about is Student's t test, as well as Shapiro-Wilk's test and many other ones (Fisher's F...).

From what I'm seeing, they are just a bunch of formulas that need to be applied, but there isn't any sort of "concept" that needs to be understood. They look like some mathematical methods, that doesn't need to be understood, even if they are very useful.

Did someone/everyone else had this experience? Or am I missing something fundamental?

In this case, do you have any sources that could be helpful for me?

Thanks in advance.