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confidence level

British

noun

statistics a measure of the reliability of a result. A confidence level of 95 per cent or 0.95 means that there is a probability of at least 95 per cent that the result is reliable Compare significance

"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

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.

Given the year-to-year volatility in monthly returns, April’s advantage over other months is not significant at the 95% confidence level that statisticians often use to assess whether a pattern is genuine.

From MarketWatch • Apr. 1, 2026

The differences plotted in the chart are not significant at the 95% confidence level that statisticians often use when determining if a pattern is real.

From MarketWatch • Feb. 5, 2026

For this study, results are accurate within ± 2.0 percentage points at a 95% confidence level.

From Science Daily • Jan. 12, 2026

What was perhaps most pleasing about Dent’s performance was his heightened confidence level.

From Los Angeles Times • Dec. 18, 2025

Even just knowing how to read music changes a teacher’s confidence level when it comes to singing, so it’s important to have a few of the basics under your belt.

From "Music and the Child" by Natalie Sarrazin

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023