type II error


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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 sec·ond kind

in a Neyman-Pearson test of a statistical hypothesis, the probability of accepting the null hypothesis when it is false; the complement of the power of the test.
Synonym(s): beta error, type II error
Farlex Partner Medical Dictionary © Farlex 2012

type II error

β error, false-negative error Statistics Acceptance of the null hypothesis when it is false or incorrect, or the error of falsely stating that two proportions are not significantly different when they actually are. See Null hypothesis Cf Type 1 error.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
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FIGURE 1 TYPE I AND TYPE II ERRORS Proper Course of Action Take No Action Take Action Take No I II Action Correct Type I Decision Error Decision Take III IV Action Type II Correct Error Decision FIGURE 2 THE BASIC DECISION MATRIX OF POLICYMAKERS Choice 1 Choice 2 Incremental Dramatic Action Action--Mild No Mitigation Action Proper Course of Action I II Correct Decision Type I Error III IV Type II Error Correct Decision TABLE 1 FOUNDATIONS OF CONSTRUCTIVIST VS.
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