critical region

American  

[krit-i-kuhl ree-juhn] / ˈkrɪt ɪ kəl ˈri dʒən /

noun

Statistics.

1. the rejection region for the null hypothesis in the testing of a hypothesis.

   The appropriate selection of a critical region is a fundamental problem in the development of permutation tests.

---

critical region British  

noun

1. that part of a statistical distribution in which the probability of a given hypothesis is less than the chosen significance level, so that the hypothesis would be rejected

---

Etymology

Origin of critical region

First recorded in 1950–55

Example Sentences

And does metformin treatment lead to long-term negative physiological changes in the offspring, especially in connection with the development of neuronal circuits in the hypothalamus, a critical region in the regulation of energy homeostasis?

From Science Daily • Mar. 20, 2024

“President Biden will make it absolutely clear that the United States will continue to engage both diplomatically and economically in this critical region made clear while this matters for the American people.”

From New York Times • Nov. 16, 2023

The Arctic “is a critical region for power projection and also for homeland defense,” Ms. Ferguson said.

From Washington Times • Sep. 27, 2022

If on the other hand, the calculated value of the test statistic is within the critical region, we cannot reject the null hypothesis.

From Textbooks • Nov. 29, 2017

Our purpose in the Persian Gulf remains constant: to drive Iraq out from Kuwait, to restore Kuwait's legitimate government, and to insure the stability and security of this critical region.

From State of the Union Address by Bush, George