Biometrika

最新文章

• Hereditary entropion and hereditary changes in the skin of the eyelids AI翻译
  作者：Usher, CH
  摘要：A pedigree with chart and photographs is shown which contains cases of spasmodic entropion appearing at unusually early ages and cases with changes in skin of the lids: (1) fullness of the skin of the upper lid; (2) skin fold of the upper lid; (3) crinkling of the skin of both upper and lower lids. Both entropion and skin changes are transmitted from parent to child. A hereditary factor is suggested that in some unknown way causes the changed condition of the skin of the lids, of which the ent...
• Experimental discussion of the (x2, P) test for goodness of fit. AI翻译
  作者：Pearson, K
  摘要：When the sample or any class frequency is small the Incomplete B- or r-Function Tables will give a better value of P than Elderton''s Table. The main use of x 2 was intended to be the comparison of a considerable graduated sample of a parent population with further samples in order to test whether such samples were likely to be samples from the parent population, only known through this graduated sample. Experimental sampling shows that the x''2''s and the Ps from the graduated sample are high...
• The geometric properties of microscopic configurations II Incidence and volume of islands of Langerhans in the pancreas I of a monkey AI翻译
  作者：Thompson, WR; Hussey, R
  摘要：Methods are presented by which the mean volume of islands of Langerhans in a given region may be estimated as well as the mean number of islets per unit volume of containing tissue, and the ratio of insular to total tissue volume. Different methods give good agreement.
• The distribution of the index in a normal bivariate population. AI翻译
  作者：Fieller, EC
  摘要：Exact and approximate formulas are derived for the distribution of the ratio of 2 normally distributed variates.
• On the normality or want of normality in the frequency distributions of cranial measurements AI翻译
  作者：Elderton, EM; Woo, TL
  摘要：The distributions of measurements of individual cranial bones are not of normal type, but are prevailingly leptokurtic and positively skew. This may follow from the failure of these measurements to be the product of many contributory causes. We thus reach the suggestive conception that the simpler the organ measured, the less likely we are to meet with normal distributions..
• The converse of Spearman,s two factor theorem. AI翻译
  作者：Camp, BH
  作者单位：Wesleyan University
  摘要：If the correlations of aptitudes form a hierarchy and none of the net correlations are negative, a given aptitude may be analysed into a general factor g and a special factor uncorrelated with the general factor and with the special factors for other aptitudes. However, the values of g may be assigned to the individuals in many ways. They differ little for most individuals in the trivial case where g has already been found, approximately, among the aptitudes measured or where the number of apt...
• Further applications in statistics of the Tm (x) Bessel function. AI翻译
  作者：Pearson, K; Stouffer, SA; David, FN
  摘要：The difference and ratio tests are discussed for a number of statistical coefficients, such as [chi]2, [sigma]2, [chi]2, n2, [eta]2, O2, which on certain hypotheses as to the parent population obey accurately or approximately the type III form of distribution. The difference of two like statistical coefficients follows the Tm (Y) Bessel Function, or in some cases the more general skew form e''[rho]Y T m (Y). Tables are provided to facilitate the use of the 2 tests. In most cases the difference...
• A preliminary classification of Asiatic races based on cranial measurements AI翻译
  作者：Woo, TL; Morant, GM
  摘要：On the basis of the coefficient of racial likeness the races are classified in 4 groups: (1) Northern Mongolian: Aleuts, Buriats, Kalmucks, Mongols, Soyotes, Telen-ghites; (2) Northern Oriental: Chinese (Northern, Southern, and Prehistoric), Japanese; (3) Southern Oriental: Aetas, Burmese A, Dayaks, Javanese, Tagals, Southwestern Tibetans; (4) Indian: Dravidians, Nepa-lese, Hindus, Tamils, Veddahs. The Northern Mongolians differ greatly from the other groups, but there are affinities between t...
• The percentage limits for the distribution of range in samples from a normal population. (n≤100.) AI翻译
  作者：Pearson, ES
  摘要：A table of mean, standard deviation and percentage limits of range is given. The use of range is most advantageous if the sample is broken up into equal random sub-samples of 6 to 10.
• A contribution to the craniology of Easter Islanders. AI翻译
  作者：Von Bonin, G
  摘要：The material is homogeneous. The skulls are narrow and high, with a long base and large profile angle. The coefficients of racial likeness with the Moriori, Maori, Tibetan B, Eskimos, Ainos, Upper Palaeolithic, British Neolithic, and Anglo-Saxons are all large. Measurements and type contours are given. In a note. MORANT shows that the Easter Islanders resemble the Loyalty Islanders.