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Autoregressive Conditional Heteroskedasticity

A statistical measure of the average error between a best fit line and actual data that uses past data to predict future performance. General Autoaggressive Conditional Heteroskedasticity is the most common way of doing this. See also: Fractal Distribution.
References in periodicals archive ?
Jon Niblo, the NCYP's chief executive, said: "The Key Stone Awards are a long-standing tradition.
He added, "Infrastructure design is a key stone to successful real estate master plan development and integrating elements such as electricity, drainage and telecommunication together provides the end user with a world-class quality lifestyle with Marsa Al Nejoum.
The most thriving paving patterns work on a random basis, working from a central key stone and avoiding straight joints in any section.
The archive will function as a key stone, combining both theatre-related items such as scores, recordings, artifacts, and the need for professional support.
Some individuals' irrational fear of numbers not with standing; getting, sharing, understanding, using and mastering numbers has become a key stone in the construct of western civilization and helps inform us (hopefully) in our daily journey through life
In fact, it is one half of the elegant building with its key stone details and multi-paned sash windows.