type I error

error

 [er´or]

a defect or mistake in structure or function.

inborn error of metabolism a genetically determined biochemical disorder in which a specific enzyme defect produces a metabolic block that may have pathologic consequences at birth, as in phenylketonuria, or in later life.

measurement error the difference between what exists in reality and what is measured by a measurement method.

Type I error the rejection of a null hypothesis that is true.

Type II error acceptance of a null hypothesis that is false.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

er·ror of the first kind

in a Neyman-Pearson test of a statistical hypothesis the probability of rejecting the null hypothesis when it is true.

Synonym(s): alpha error, type I error

Farlex Partner Medical Dictionary © Farlex 2012

type I error

α error, false-positive error Statistics Rejection of the null hypothesis when it is true, or the error of falsely stating that 2 proportions are significantly different when they are the same

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.