-
作者：GARVY, G; LEWIS, RE
-
作者：MCVAY, FE
-
作者：DELURY, DB
摘要：A detailed discussion with examples from a 4 X 4 square with several replications of simplified computations which are advantageous when a particular exptl. design is in routine use.
-
作者：DIXON, WJ; MOOD, AM
摘要：A simple test of the equality of 2 columns of paired observations utilizing the signs and ignoring the magnitude of the intra pair differences. Equivalent to the test described by Cole [see B. A. 19(9): entry 17990] but differently tabulated to show the number of disagreeing signs compatible with different levels of significance for up to 100 pairs of observations. Efficiency is compared with that of the t-test for certain conditions.
-
作者：WILM, HG
摘要：Microclimatic readings vary locally and in time so that excessively laborious and expensive sampling may be required to obtain adequate average values for any temporal or spatial units. The amt. of sampling for long time averages may be reduced by using few instruments which, after each sampling, are moved among k randomized positions. This technique, in conjunction with unbiased fixed stations which will completely measure temporal variations at individual points, may be used to obtain averag...
-
作者：PATTERSON, RE
摘要：Coding by means of the equation: [image]a[long dash][image]1+ [image] = [image]n, (where [image]a is the unadjusted mean of the ith. subclass in the ith row or column, Aij is the corresponding adjusted or coded mean, Xj is the mean of the jth row or column, and X is the grand mean) will eliminate the variance attributable to either of the border effects in a 2-way table designed for analysis of covariance. When applied to a table which is non-orthogonal as a result of disproportionate subclass...
-
作者：BERKSON, J
摘要：In biological assay, when death rates, q, are plotted against dosage, the resultant sigmoid curve may be interpreted as a cumulated normal distr. or as a logistic. Either approaches linearity (against log. dosage) upon transformation into pro-bits or logits respectively where the probit, pr, is defined as (5 + x) and x is taken from a table of the normal curve oriented in q, and the logit, lr = log.e[long dash][long dash][long dash]-[long dash]. For testing goodness of fit of a function Q to t...
-
作者：LADERMAN, J; ABRAMOWITZ, M
摘要：This paper is largely concerned with the excellent way in which the important problem of finding differences for tabular entries can be handled by the Underwood-Elliott Fisher Sunstrand Accounting Machine, Model D. All differences up to the 8th of 12 digit entries can be simultaneously calculated and printed. A binomial method for easy calculation of the n''th difference is mentioned. This would be useful to those who have access only to ordinary machines.
-
作者：WAUGH, FV
摘要：Given that the partial regression of x1 on Xk is b1k and its standard error is S, the partial correlationcoefficient, [image] where N[image] is the number of degrees of freedom. Examples from Ezekiel''s text show that this method of computation saves much labor as compared with the Doolittle method. The above formula is derived.
-
作者：WHELPTON, PK
摘要：A discussion of errors involved in computing reproduction rates from age-specific birth rates. These rates differ from age-specific death rates in that the risk of birth is zero for part of the population in any year and that only women of n parity order can be exposed to the risk of bearing a child of n + 1 order. Age-parity-fecundity-marriage specific birth rates are recommended for use where adequate population data are available.
