A bit scared to post a question here (math fear syndrome I bet). I was looking for a way to predict (rough estimation) a next value based on series of previous values. These values are a sales totals for several previous years.
I found few websites i.e. The Online Excyclopedia of Integer Sequences but cannot understand formulas that are given there and how to modify them.
I know that the problem is not easy but was wondering if there is some way to do at least rough estimation of next few values.
An example. Lets say I have previous years sales: 200, 280, 370, 450, 530. Now I am looking to predict next few value(s).