WOLFRAM

Wolfram Language & System Documentation Center

ConfidenceLevel

is an option to statistical functions that specifies the confidence level for confidence intervals.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
See Also
Tech Notes
Cite this Page
HypothesisTesting`
HypothesisTesting`

ConfidenceLevel

As of Version 7.0, ConfidenceLevel is part of the built-in Wolfram Language kernel. »

ConfidenceLevel

is an option to statistical functions that specifies the confidence level for confidence intervals.

Details and Options

  • To use ConfidenceLevel, you first need to load the Hypothesis Testing Package using Needs["HypothesisTesting`"].
  • For confidence level , the probability that a confidence interval will contain the true value is .
  • The value of ConfidenceLevel can be any number between 0 and 1. The default setting is 0.95.

Examples

Basic Examples  (1)

A 99% confidence interval from a normal distribution:

Wolfram Research (2007), ConfidenceLevel, Wolfram Language function, https://reference.wolfram.com/language/HypothesisTesting/ref/ConfidenceLevel.html.

Text

Wolfram Research (2007), ConfidenceLevel, Wolfram Language function, https://reference.wolfram.com/language/HypothesisTesting/ref/ConfidenceLevel.html.

CMS

Wolfram Language. 2007. "ConfidenceLevel." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/HypothesisTesting/ref/ConfidenceLevel.html.

APA

Wolfram Language. (2007). ConfidenceLevel. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/HypothesisTesting/ref/ConfidenceLevel.html

BibTeX

@misc{reference.wolfram_2025_confidencelevel, author="Wolfram Research", title="{ConfidenceLevel}", year="2007", howpublished="\url{https://reference.wolfram.com/language/HypothesisTesting/ref/ConfidenceLevel.html}", note=[Accessed: 10-August-2025]}

BibLaTeX

@online{reference.wolfram_2025_confidencelevel, organization={Wolfram Research}, title={ConfidenceLevel}, year={2007}, url={https://reference.wolfram.com/language/HypothesisTesting/ref/ConfidenceLevel.html}, note=[Accessed: 10-August-2025]}