confidence interval

[ kon-fi-duhns in-ter-vuhl ]

  1. a range of values above and below a given statistic, with a specified probability that the true value falls within that range: the span of the interval is equal to twice the margin of error: An overview of 20 studies revealed that calcium supplements reduced the risk of total fracture, showing a relative risk of 0.89 with a 95% confidence interval of 0.81 to 0.96.: Compare interval estimation.

Origin of confidence interval

First recorded in 1930–35

Words Nearby confidence interval Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for confidence interval

confidence interval

  1. statistics an interval of values bounded by confidence limits within which the true value of a population parameter is stated to lie with a specified probability

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012