| 单词 | non-centrality | 
| 释义 | non-centralityn.  The property of being non-central, esp. (in Statistics) of having a non-zero mean; the degree to which something is non-central. ΘΚΠ the world > relative properties > number > probability or statistics > 			[noun]		 > distribution > skewness skewness1894 non-centrality1949 skew1974 1949    Biometrika 36 196  				The distribution of a non-central χ2 having a non-centrality λ is given by [etc.]. 1959    H. Scheffé Anal. of Variance 412  				The ordinary or central chi-square distribution is the special case of the noncentral distribution when the noncentrality parameter δ = 0. 1969    H. O. Lancaster Chi-Squared Distribution xi. 231  				It is required to determine the parameters of non-centrality of the test of independence in two dimensions. 2000    Proc. SPIE 		(Internat. Soc. Optical Engin.)	 4009 366  				The most important perturbations that act on these celestial bodies are: non-centrality of the gravitational field, Sun and Moon attraction, [etc.]. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < | 
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