Notes on Distributed Systems for Young Bloods (2013)
"Using a mean assumes that the metric under evaluation follows a bell curve but, in practice, this describes very few metrics an engineer cares about. “Average latency” is a commonly reported metric, but I’ve never once seen a distributed system whose latency followed a bell curve. If the metric doesn’t follow a bell curve, the average is meaningless and leads to incorrect decisions and understanding. "I was never great at stat's. Can somebody explain why this is?