ARCH

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Related to mandibular arch: hyoid arch

ARCH

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 ?
Arch Perimeter: Both maxillary and mandibular arch perimeters were significantly smaller in the HVDRR group when compared with the normal individuals by an average of 5.
Some facial nerve fibers terminate in the mandibular arch superficially and caudally.
In gnathostomes, the mandibular arch forms the bones of the primitive jaw itself.