Type I error
noun
the error made in the statistical testing of a hypothesis by rejecting the null hypothesis when it is actually true.
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Type I error
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type I error
type I errornounstatistics the error of rejecting the null hypothesis when it is true, the probability of which is the significance level of a result
Type I error
Americannoun
type I error
British
noun
Etymology
Origin of Type I error
First recorded in 1960–65
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Type I error: The null hypothesis claims that the tomato plant is alive, and it is true, but the students make the mistake of thinking that the plant is already dead.
From Textbooks ● Mar. 27, 2020
Consider the consequences of making a Type I error.
From Textbooks ● Nov. 29, 2017
Said another way, we want to have only a 5 or 10 percent probability of making a Type I error, rejecting a good null; overthrowing the status quo.
From Textbooks ● Nov. 29, 2017
The probability of making a Type I error is α.
From Textbooks ● Nov. 29, 2017
A Type I error occurs when a true hypothesis is rejected, and a Type II error occurs when a false hypothesis is accepted.
From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
