is an option to statistical confidence interval and hypothesis test functions of two samples that specifies that unknown population variances are equal.


EqualVariances
is an option to statistical confidence interval and hypothesis test functions of two samples that specifies that unknown population variances are equal.
Details and Options
- To use EqualVariances, you first need to load the Hypothesis Testing Package using Needs["HypothesisTesting`"].
- EqualVariances is an option for confidence interval and hypothesis test functions of two lists.
- With the default setting EqualVariances->False, variances are estimated from the two samples independently if the variances are not specified as known.
- With EqualVariances->True, a common pooled estimate of the variance is used for both populations if the variances are not specified as known.
See Also
Tech Notes
Text
Wolfram Research (2007), EqualVariances, Wolfram Language function, https://reference.wolfram.com/language/HypothesisTesting/ref/EqualVariances.html.
CMS
Wolfram Language. 2007. "EqualVariances." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/HypothesisTesting/ref/EqualVariances.html.
APA
Wolfram Language. (2007). EqualVariances. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/HypothesisTesting/ref/EqualVariances.html
BibTeX
@misc{reference.wolfram_2025_equalvariances, author="Wolfram Research", title="{EqualVariances}", year="2007", howpublished="\url{https://reference.wolfram.com/language/HypothesisTesting/ref/EqualVariances.html}", note=[Accessed: 13-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_equalvariances, organization={Wolfram Research}, title={EqualVariances}, year={2007}, url={https://reference.wolfram.com/language/HypothesisTesting/ref/EqualVariances.html}, note=[Accessed: 13-August-2025]}