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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 ?
According to the results of both methods the ovoid arch form was most prevalent while squarish arch form was least prevalent.
Overall, both methods revealed subjects with majority of ovoid arch forms followed by tapering and squarish respectively.
11 The most used arch form in the MBT philosophy is the ovoid arch form especially during the initial phase of treatment and the main purpose of this is to reduce the inventory.