I know this question might be a bit too broad, but I am looking for some pointers for self-study.
I am given a set of data for which I have to identify the trends, and potentially come up with some polynomial equation.
I don't have much experience with these tasks. After some superficial online research I found articles about curve fitting, but I don't know how it works and its basic principles. I see the concept dates back to earlier times, so I assume it is established and there are useful resources to learn it.
Can you point me to some "established" resources in the field so I can study on my own.