That’s a good point. Reinforcement is pretty narrowly focused on the individual. By contrast, regression to the mean makes a lot more sense if there is a population of data (the rate of goals allowed by other goalkeepers this season or by the specified goalkeeper in prior seasons—but my example is rapidly going to become less useful because of endpoint issues—there’s no way to allow fewer than zero goals per season).
That’s a good point. Reinforcement is pretty narrowly focused on the individual. By contrast, regression to the mean makes a lot more sense if there is a population of data (the rate of goals allowed by other goalkeepers this season or by the specified goalkeeper in prior seasons—but my example is rapidly going to become less useful because of endpoint issues—there’s no way to allow fewer than zero goals per season).