is an option to statistical confidence interval and hypothesis test functions that specifies the value of the population variance.
KnownVariance
is an option to statistical confidence interval and hypothesis test functions that specifies the value of the population variance.
更多信息和选项
- To use KnownVariance, you first need to load the Hypothesis Testing Package using Needs["HypothesisTesting`"].
- The value of KnownVariance can be a positive number or None.
- For KnownVariance->None, the population variance is estimated from the input data.
- For confidence intervals and tests based on two samples, variances var1 and var2 for the two populations can be given as KnownVariance->{var1,var2}.
技术笔记
文本
Wolfram Research (2007),KnownVariance,Wolfram 语言函数,https://reference.wolfram.com/language/HypothesisTesting/ref/KnownVariance.html.
CMS
Wolfram 语言. 2007. "KnownVariance." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/HypothesisTesting/ref/KnownVariance.html.
APA
Wolfram 语言. (2007). KnownVariance. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/HypothesisTesting/ref/KnownVariance.html 年
BibTeX
@misc{reference.wolfram_2025_knownvariance, author="Wolfram Research", title="{KnownVariance}", year="2007", howpublished="\url{https://reference.wolfram.com/language/HypothesisTesting/ref/KnownVariance.html}", note=[Accessed: 02-May-2026]}
BibLaTeX
@online{reference.wolfram_2025_knownvariance, organization={Wolfram Research}, title={KnownVariance}, year={2007}, url={https://reference.wolfram.com/language/HypothesisTesting/ref/KnownVariance.html}, note=[Accessed: 02-May-2026]}