(idiomatic) A ballpark figure; a very rough approximation.

plural of ballpark estimate

(statistics) Any estimator that is a linear combination of order statistics of the measurements.

Alternative spelling of overestimate

plural of L-estimator

A branch of statistics that deals with estimating the values of parameters based on measured empirical data that has a random component.

plural of ballpark estimation

Alternative form of ballpark estimate

plural of Fermi estimate

(physics, engineering) An estimate of the kind that answers a Fermi problem.