We need simple and general models with few parameters. (sciencedaily.com)
«Only few parameters are needed, and no human intuition is required, which can potentially bias the simulation result,» he said. (sciencedaily.com)
You need to describe this deviation in as few parameters as possible if your test is going to be reasonably powerful Tamino has done such tests using a couple of such measures. (tamino.wordpress.com)