Please could some real experts give an opinion on this question on English.SE: What preposition to use when fitting data?
Do we fit data with, by, or as a linear function?
Forgive me as I do not know how best to highlight this and I'm happy for this question be be deleted.
One does no such thing. One fits a linear function to data, not the other way around. Unless of course one is inventing "data" that will nearly fit a preconceived pattern, a practice not entirely unknown in Science.