Biometrika

最新文章

• THE ASYMPTOTICAL DISTRIBUTION OF RANGE IN SAMPLES FROM A NORMAL POPULATION AI翻译
  作者：ELFVING, G
  摘要：The distribution function of a simple transformation of the range of a sample from a normal population is expressible, in the limit, in terms of the first order Bessel function. An upper limit for differences between the distribution functions for finite samples and the limiting case is given.
• SOME GENERALIZATIONS IN THE MULTIFACTORIAL DESIGN AI翻译
  作者：PLACKETT, RL
• Statistical techniques in applied psychology AI翻译
  作者：Chambers, EG
• On the solution of some equations in least squares AI翻译
  作者：Lindley, DV
• ON A METHOD OF ESTIMATING FREQUENCIES AI翻译
  作者：HALDANE, JBS
  摘要：A person counts the occurrences of an event per trial until m successes have occurred and designates the ratio x = m/n, where n is the total number of events. This article proves that an unbiased estimate of the frequency of x is m[long dash]1/n[long dash]1 and that its variance is approx. equal to m(n[long dash]m)/n2(n[long dash]1).
• On the distribution of the estimate of mean deviation obtained from samples from a normal population AI翻译
  作者：Godwin, HJ
  摘要：Let a sample from a normal population be x1, x2,.....xn, the mean deviation is[image] The frequency function of m is found by evaluating[image] over the region X1 [less/equal]x2[less/equal].......xn, [image]This integral is evaluated by a transformation of the quadratic from [SIGMA]x2. The frequency function of m is[image].
• Moments of r and x2 for-a fourfold table in the absence of association AI翻译
  作者：Haldane, JBS
  摘要：Consider a 4-fold table: where [image]. The author finds expressions for the first 3 moments of [chi]2 and the first 6 moments of r and considers special cases. These moments can be used in tests of significance.
• ON THE USE OF MATRICES IN CERTAIN POPULATION MATHEMATICS AI翻译
  作者：LESLIE, PH
  摘要：The [female] age distribution at a given time t for a given population may be represented by a vector [xi] (t) whose components are the number of [female] [female] alive between age x and x + 1 at time t. The unit of time is arbitrary. If Px denotes the probability that a [female] aged x to x + 1 at time t will survive to time t + 1, if Fx denotes the number of daughters which are born between t and t + 1 to [female] [female] aged x to x + 1 at time t, and which survive to time t + 1, and if F...
• ERRORS IN THE ROUTINE DAILY MEASUREMENT OF THE PUERPERAL UTERUS AI翻译
  作者：RUSSELL, CS
  摘要：Seven puerperal patients whose uteri could be felt were chosen, and 6 unpracticed observers measured each uterus twice, the interval between measurements being about 15 mins. An analysis of variance, carried out on these measurements, showed that there were significant differences between patients, observers, readings, the interaction patients-observers, and the interaction observers-readings. Three more sets of patients were measured by practiced observers. Analyses of variances, carried out ...
• THE TREATMENT OF TIES IN RANKING PROBLEMS AI翻译
  作者：KENDALL, MG
  摘要：In the beginning of the article the author compares the rank correlation coefficient derived by Student with that derived by Woodbury and states under what conditions one is better than the other. He discusses the estimation of a ranking and shows how to make tests of significance for n rankings by using the z-test under certain conditions. The entire article is concerned with methods and formulas for handling rank correlation when there are ties. A comparison is made between [rho] and [tau].