Biometrika

最新文章

• Studies in the theory of sampling. AI翻译
  作者：Pepper, J
  摘要：(I.) General values for any distribution and a limited sampled population have been found for: mean values of the product moments, p11, p 12, P21, P22, p 31, P13 and consequently of m2, m 3, m4; standard deviations of p11, p 12, p21 and consequently of m2 and m3; correlations between m x, mv, [sigma]x2, [sigma]y2, p11. (II.) General values for any distribution and an infinite sampled population have been found for: the standard deviations of p31, p13, p22 and consequently of m4; the 3rd and 4t...
• On the standard error of the mean square contingency. AI翻译
  作者：Kondo, T
  摘要：The mean and standard error of [PHI]22, in which the marginal totals are given their population values, have been derived by Pearson and Young. In this paper 1st and 2nd approximations are derived for the mean and standard error of [PHI]12, in which the marginal totals are given their values in the sample. From these results are derived the mean and standard deviation of C2, the coefficient of mean square contingency. Experimental sampling shows good agreement with theory. The distributions of...
• Note on Dr Craig's paper. AI翻译
  作者：Pearson, ES
  摘要：A numerical examination of formulas for the semi-invariants of the standard deviation and unspecified[beta]1 of samples from a Type III population.
• The skull in relation: (I) To the prediction of its capacity, (II) To the pre-eminence of the left hemisphere. AI翻译
  作者：Hoadley, MF
  摘要：Internal diams. are more closely correlated with capacity than external, the gain in accuracy of prediction being 23%. Thickness of the bone is only slightly correlated with external measurements. The mean internal length is significantly greater on the right side than on the left. This result agrees with that of Braune on brain weight but contradicts the doctrine that the left hemisphere is the larger in right handed persons. The proportion of skulls in which the right side is longer than the...
• On the importance of the type silhouette for racial characterisation in anthropology. AI翻译
  作者：McLearn, I; Morant, GM; Pearson, K
  摘要：The technique of making type silhouettes is described. The English [female] and negro [male] silhouettes resemble each other except in the mouth and chin.
• The distribution of frequency constants in small samples from symmetrical populations. AI翻译
  作者：Pearson, ES
  摘要：Discusses the distributions of range, center, and median.
• The generalised product moment distribution in samples from a normal multivariate population AI翻译
  作者：Wishart, J
  摘要：A generalization of R. A. Fisher''s formula for the frequency distribution of the variances and product moment coefficients in samples from a bi- variate population. The moments of the generalized distribution are given up to the 4th order, and as far as 8 variates.
• On the examination of final digits by experiments in artificial sampling AI翻译
  作者：Sun, CP
  摘要：Inequality in the numbers of final digits in scale readings may be due to other causes than personal equation.
• The application of the coefficient of racial likeness to test the character of samples. AI翻译
  作者：Pearson, K
  摘要：If 2 cranial series have a coefficient <3.0 they are probably from the same homogeneous population. The Hindu series tested are in striking accord, but the Dravidian series do not agree well among themselves, or with the Hindu series.
• The relation of weight to stature, bi-cristal diameter and age AI翻译
  作者：Gray, H
  摘要：Weight prediction from stature and bicristal diameter of pelvis is better than prediction from stature and age. The distributions are not curvilinear enough to invalidate this conclusion.