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Related to Pharyngeal arches: Pharyngeal pouches

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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 ?
Estimating fork lengths of fathead minnows, Pimephales promelas, from measurement of pharyngeal arches. Can.
The pharyngeal roof and any neural tissue attached to the pharyngeal arches that might obscure the view of the primordium were also removed.
In vertebrates, much of the head skeleton is derived from neural crest precursors that migrate into the pharyngeal arches from the midbrain and specific rhombomeres of the hindbrain (Langille and Hall, 1988, 1993).