ARCH

(redirected from pulmonary a)
Also found in: Dictionary, Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.
Related to pulmonary a: pulmonary vein, pulmonary function test, pulmonary embolism, pulmonary tuberculosis, pulmonary edema, Pulmonary fibrosis, pulmonary hypertension, pulmonary medicine

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.