@Emmeran
Suggestions for avoiding the "Stat's trap"?
Like most SOL authors, I've spend untold hours studying my stats, but I look at them more like an economist than a popularity rating. They make the most sense when you look at either the percentage-change between chapters, or the outliers. The mean generally means little, as it's largely an arbitrary figure, its the many hidden details which make up that unimportant figure which helps you make informed decisions.
A classic case is studying the use of a specific technique, say cliffhangers or short, concise action scenes. They obviously won't change the overall score--which is largely based on what the other SOL authors are posting within the same period--but you can tell whether your use of those techniques is helping or hurting your story. If score rises or falls after using them, that's a definite signal from your readers, as long as it's more than a momentary glip (ex. you had a couple church-attending old ladies stop by one afternoon).
I generally don't care what score my stories receive, but I use them to tell me which chapters excite my fans, and which they really don't care for.