Name for incrementally calculating a mean If μ = 4 and n = 2 and suddenly I have a new datum of 22 I can add 1 to n and recalculate μ as (4*2+22)/3 = 10 without even looking back at the old data. This can be used as an optimization to reduce recalculations as data grows.
But does it have a name? Ideally a name that would drive someone to a definition of the function I just used. What's a good way to describe this?
Looking for something to say to coders who didn’t exactly master statistics.

You are looking for online-algorithms:

Online algorithms refer to computations that are performed iteratively, with data arriving during the computation. Online learning are methods which works when the data arrives.

