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单词 t distribution
释义

t distribution in British English

noun
Student's t
 

Student's t in British English

noun
a statistic often used to test the hypothesis that a random sample of normally distributed observations has a given mean, μ; given by t = (̄x–μ) √n/s where ̄x is the mean of the sample, s is its standard deviation, and n is the size of the sample
Word origin
after Student, the pen name of W. S. Gosset (1876–1937), English statistician and research scientist

Examples of 't distribution' in a sentence
t distribution

We show, via backtesting, that the t-distribution produces superior results to the normal one.
C Milwidsky, Eben Mare 2010, 'Value at Risk in the South African equity market: a view from the tails', South African Journal of Economic and Management Scienceshttps://sajems.org/index.php/sajems/article/view/109. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The test statistics are assumed to have a multivariate-t distribution.
Paul N. Somerville 2012, 'A Package to Study the Performance of Step-Up and Step-Down Test Procedures', Journal of Statistical Softwarehttp://www.jstatsoft.org/v51/i06/paper. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The methodology adopted in this paper was based on a posteriori multivariate t distribution.
Paulo César de Resende Andrade, Daniel Furtado Ferreira 2010, 'Comparações múltiplas bayesianas em modelos normais homocedásticos e heterocedásticosBayesian multiple comparisons in homocedastic and heterocedastic normal models', Ciência e Agrotecnologiahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542010000400008. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Simulation studies show increased mapping power and precision with the t distribution than that of a normal distribution.
Cen Wu, Gengxin Li, Jun Zhu, Yuehua Cui 2011, 'Functional mapping of dynamic traits with robust t-distribution.', PLoS ONEhttp://europepmc.org/articles/PMC3178556?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It applies the latent variable probability theory with multivariate t-distribution to establish the normal traffic model.
Yuchong Li, Xingguo Luo, Yekui Qian, Xin Zhao 2015, 'Network-Wide Traffic Anomaly Detection and Localization Based on Robust MultivariateProbabilistic Calibration Model', Mathematical Problems in Engineeringhttp://dx.doi.org/10.1155/2015/923792. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In addition, the adaptive t-distribution mutation for non-optimal individuals and elite opposition-based learning for the optimal individual are used.
Xi-Guang Li, Shou-Fei Han, Chang-Qing Gong 2017, 'Analysis and Improvement of Fireworks Algorithm', Algorithmshttp://www.mdpi.com/1999-4893/10/1/26. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
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更新时间：2026/6/1 9:13:33