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作者：Little, KL
摘要：Archaeological material from excavations at Castle Hill, Scarborough, revealed, at 3 levels, an early Iron Age village, a Roman signal station and 3 chapels, 1 earlier and the 2 later than the Norman conquest. Various measurements of skulls of these inhabitants were measured and compared with each other, with 7 other British series and with 7 other non-British series. Variabilities, as measured by the standard deviations, and coefficients of variation, were obtained for each of the 37 skull ch...
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作者：Merrington, M; Thompson, CM
摘要：The prefatory note, given by E. S. Pearson, shows how the distribution of Snedecor''s F can be obtained and also the exact distribution function. Tables are presented giving the F distribution for various degrees of freedom for the 50, 25, 10, 5, 2.5, 1, 0.5% points. These tables use the degrees of freedom for the greater variance of 1 to 10, 12, 15, 20, 24, 30, 40, 60, 120 and 00 and for the degrees of freedom for the smaller variance the values 1 to 30, 40, 60, 120 and 00. These tables are m...
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作者：Nicholson, C
摘要：A frequency distribution for the ratio [image] is obtained, where x and y are correlated. By a transformation, which substitutes for the correlation surface with its illiptical contours an equivalent system with circular contours having a common standard deviation for certain sections, the author shows that the cumulative frequency function can be expanded in the form [image] where h and q are defined by the given material and the B''s are certain definite integrals from 0 to h. The tables pre...
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作者：Woo, TL
摘要：Two series of Chinese humeri, namely skeletal remains representing the Sui-T''ang dynasties (A.D. 581-8991) and modern Chinese of Hsiu Chiu Shan, south of Hsia Kuan, Nanking, were studied. 15 measurements and indices were taken. Means, S.D., and bilateral correlations were computed and compared with similar determinations of other sets of measurements. There are significant diffs. between means in some cases and none in others. Various conclusions are suggested. For the 11 measurements of size...
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作者：Rendel, JM
摘要：Weights'' measurements of eggs from 2 breeds of ducks were made. A record was kept as to whether or not each egg hatched. The author concludes that the further the wt. of an egg is from the mean wt., the smaller is its chance of hatching. Eggs with wts. outside the range 70-76 g. lose rapidly in hatchability with each gram that their wt. moves farther from the mean. At 67 and 80 g. the loss is approx. 1% per g. and at 62 and 85 g., the loss is 1 2/3% per g., with a total loss of 11% over eggs ...
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作者：Geary, RC
摘要：A unimodal frequency distribution f(x), of x is assumed. It is shown that to a given probability a, the range y, from x to x+y, is shortest when j(x) = f(x + y). This property is generalized to a quasi-multiple frequency distribution. This property is employed to secure estimate parameters for parent populations from samples drawn from the populations.
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作者：Pearson, ES; Hartley, HO
摘要：Denote by x 1, . . . , xn a random sample of n observations arranged in ascending order of magnitude and drawn from a normal population with standard deviation o. The range, or spread, in the sample is Xn[long dash]X1 and may be expressed in units of the standard deviation by the ratio [image] Let a 2d independent sample X1 . . . , xv+1 be drawn from the same population. [image] Tables are given which enable one to obtain the probability integral of q and the lower and upper percentage points ...
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作者：Greenwood, M
摘要：This is the last part of the article on medical statistics, which discusses the works on this subject of men connected with the medical profession before 1838. The works of the Heberdens, Short, Deparcieux, Struyck, Sissmilch, Hawkins and Farr are described in detail. These men were interested in the ratio of births to deaths, a statistical measure of health, life tables, vital statistics, enumerations of populations, sex ratio, mortality of small and large towns, causes of deaths, effect of v...
