Biometrika

最新文章

• Further investigation of the morphometric characters of the individual bones of the human skull. AI翻译
  作者：Pearson, K; Woo, TL
  摘要：Four factors controlling the dimensions and shapes of the cranial bones are distinguished: (1) Factor of homology, measured by correlations between corresponding lengths and indices of homologous bones. The mean correlation for lengths is 0.82, for indices 0.74. (2) Factor of size, measured by correlation of lengths on different bones on the same side, or on heterologous bones on opposite sides. The mean cor-relation is 0.18. (3) Factor of shape, measured by correlation between indices of bone...
• Endocranial diameters and indices. A new instrument for measuring internal diameters of the skull. AI翻译
  作者：Wagner, K
  摘要：The new instrument measures int. diams. more accurately than Weinert''s. The skull cap is thicker at the bregma than at the euryon. [male] skulls are in general a little thicker than [female]. There are marked sexual and racial differences in thickness of os frontale at glabella. The indices of int. diams. show increases over the external, greatest in ht.-length, less in breadth-length, least in ht.-breadth. There is less racial differentiation in the int. breadth-length index than in the exte...
• On an important class of statistical hypotheses AI翻译
  作者：Kolodziejczyk, S
• A second piebald family from Suffolk. AI翻译
  作者：Cockayne, EA
  摘要：The affected persons have a white frontal blaze of hair and unpigmented areas of skin on forehead, chest, abdomen, arms and legs. The proportion of affected agrees closely with that expected if the piebald condition is due to a single dominant gene. Both sexes are about equally affected.
• Growth changes in bodily size and proportions during the first three years: A developmental study of sixty-one children by repeated measurements. AI翻译
  作者：Bayley, N; Davis, FC
  摘要：The most reliable of the measurements taken are length, weight, and stem length. The group was typical of other groups reported in the literature, except that after 6 mos. its members averaged taller and heavier than children in other parts of the U. S. A., except for selected groups. Growth in all dimensions was retarded, rapidly at first, and then more slowly. In proportion to their size at 1 mo., the width measures of hip, chest and shoulder increased more rapidly during the 1st yr. than an...
• The distribution of the difference between the extreme observation and the sample mean in samples of n from a normal universe. AI翻译
  作者：McKay, AT
  摘要：A new criterion for the rejection of outlying observations is derived.
• Some problems in the analysis of regression, among k samples of two variables AI翻译
  作者：Welch, BL
  摘要：Neyman and Pearson''s method of determining the likelihood of hypotheses is extended to such problems as the following: Given several bivariate samples, are the regression lines and the variances about them identical within limits of sampling? If the variances are identical are the regression lines the same, etc.?.
• Note on the sampling distribution of √β1, where the population is normal. AI翻译
  作者：Williams, P
  摘要：Calculations based on the exact values of the sampling moments confirm the accuracy of E. S. Pearson''s table, which was based on approximate values. The table is extended.
• Thoughts suggested by the papers of messrs Welch and Kolodziejczyk AI翻译
  作者：Pearson, K
  摘要：An alternative method for testing the hypothesis that bivariate samples are derived from populations with the same array standard deviation and same regression coefficient is developed. For small samples the conclusion that certain hypotheses are not markedly improbable does not seem to be a justification without further experience that they are true..
• Statistics of rare events AI翻译
  作者：Luders, R
  摘要：The Poisson formula assumes that events are independent of each other. For cases in which this is not true, e.g., railway accidents or contagious diseases, formulae are here developed which fit actual examples better than the Poisson formula.