"Happens every X updates" vs. "Has Y% of happening every update" - Main differences?
Example: I call my parents once a week, every Saturday. There is a 14% chance (1/7) that my parents will call me once at any day of the week.
I'm having a hard time to figure out the main differences of those scenarios. After a long time, the total amount that both happened will be approximate. However, the first will never go above or below the predicted.
What are the main differences? How it behaves according to the frequency of the updates?
Hope it is clear enough. This is not only for theoretical purposes, I just used the example above for the abstraction of each case.