confidence interval

noun

: a group of continuous or discrete adjacent values that is used to estimate a statistical parameter (such as a mean or variance) and that tends to include the true value of the parameter a predetermined proportion of the time if the process of finding the group of values is repeated a number of times

Examples of confidence interval in a Sentence

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The margin of sampling error at the 95% confidence interval is ± 3.46 percentage points. Marc Caputo, Axios, 23 Jan. 2025 The confidence interval, similar to margin of error, for the full sample was 3 points, for Democrats was 4.6 points and for Republicans was 5.3 points. Jared Gans, The Hill, 23 Jan. 2025 The lower bound for the cost at the 95% confidence interval is $151.3 billion while the upper bound is $242.8 billion. Alex Nitzberg, Fox News, 12 Jan. 2025 Silver projects a total national turnout of approximately 155 million voters, with a confidence interval ranging from 148 million to 162 million, according to his model. Gordon G. Chang, Newsweek, 31 Oct. 2024 See all Example Sentences for confidence interval 

Word History

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of confidence interval was in 1934

Dictionary Entries Near confidence interval

Cite this Entry

“Confidence interval.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/confidence%20interval. Accessed 30 Jan. 2025.

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