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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.
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作者：SEAL, HL
摘要：A population is considered subject to specified stochastic decremental forces operating at each age and supported by an annual number of entrants distributed between certain limits by a known frequency law. It is assumed that the population has existed for at least a certain number of yrs. The individuals of the now stationary population are divided into a certain number of strata. The numbers in each of the strata are determined by a chance force operating on the individuals of each stratum, ...
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作者：Seal, HL
摘要：A population is considered subject to specified stochastic decremental forces operating at each age and supported by an annual number of entrants distributed between certain limits by a known frequency law. It is assumed that the population has existed for at least a certain number of yrs. The individuals of the now stationary population are divided into a certain number of strata. The numbers in each of the strata are determined by a chance force operating on the individuals of each stratum, ...
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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].
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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...
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作者：HARTLEY, HO
摘要：A brief account is given for determining the tables of the probability integral of the mean deviation in normal samples. This is followed by the table for various values of m and n where n is the number in the sample and m is the mean deviation of this sample.
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作者：HALDANE, JBS
摘要：The author develops formulas for the first 4 cumulants of the [chi]2 which pertains to a n X 2-fold table and shows how tests of homogeneity can be obtained from them. These formulas may be used when the expected values of some of the cells are less than unity. A numerical application is given pertaining to frequency of cross-over between a number of sex-linked genes in Drosophila subobscura.
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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).
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作者：Haldane, JBS
摘要：The author develops formulas for the first 4 cumulants of the [chi]2 which pertains to a n X 2-fold table and shows how tests of homogeneity can be obtained from them. These formulas may be used when the expected values of some of the cells are less than unity. A numerical application is given pertaining to frequency of cross-over between a number of sex-linked genes in Drosophila subobscura.
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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 ...
