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作者：Bliss, CI
摘要：The chart facilitates interpolation for probability values or chi-square values. The range of probability is from 1.0 down to 0.001. An example on distr. of relative toxicity is given.
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作者：Comstock, RE
作者单位：University of Minnesota System; University of Minnesota Twin Cities
摘要：The actual subclass numbers in the data concerning [sex difference in growth rate of swine] did not deviate significantly, as judged by chi- square, from the expected numbers. However, the method of expected numbers by comparison with that of fitting constants overestimated the mean square for the sex-litter interaction by enough to have a bearing on interpretation of the results and the mean squares for litters by a slight amount. The differences in results of the two methods were interpreted...
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作者：Cochran, WG
作者单位：Iowa State University
摘要：The following procedure is suggested Consider whether one of the simplest methods of analysis (equal weights, equal weights within treatments, equal weights within replicates) can be used without further investigation. If in doubt apply the appropriate test. If none of the methods in [the above] appears satisfactory, estimate the relative amounts of binomial and extraneous variation from an analysis of variance of the fractions or percentages. Examples are selected for the paper from the servi...
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作者：Mottley, CM; Embody, DR
作者单位：Cornell University
摘要：The idea that the full moon had an adverse effect on the fishing became general at Paul Lake in central British Columbia after the 1934 season. To test this claim records of catches of over 27,000 rainbow trout, extending through 5 seasons (1932-1936), were examined by sampling. Catches during the day of, the day before and the day after the full moon were compared with catches in 3 days selected at random from the remaining days of each month. Adjustment for the number of boats fishing was ma...
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作者：Deming, WE
摘要：Two types of problems confront the statistician in his job of making predictions in type A, action is based on a prediction regarding future measurements of a product already in existence; in type B, the product is not yet subject to measurement, perhaps not even produced yet, the evidence coming from other product originating from the same or similar processes. The fundamental problem of mathematical statistics (type A) is to set fixed limits within which percentages of other terms of a rando...
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作者：Osborne, JG
摘要：To estimate the composition of an area by cover-type classes, sampling is usually systematic, the national forest-survey procedure being one line in 10 miles of width. By superimposing on a map 20 lines per mile, randomly placed, 3 types of sampling were tried[long dash]completely random, stratified random and a systematic type consisting of lines 1 mile apart. The estimates of the mean area in cultivated land were practically the same in the 3 types of sampling, but the stratified random surv...
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作者：Berkson, J
摘要：In the dominant school of statistics, the test of significance not only characterizes the method of statistics but is considered to be the very essence of all exptl. science. The argument as usually presented (if the experience at hand would occur very infrequently in a given hypothesis, the hypothesis is considered disproved) has an apparent plausibility, but reflection has led to the conclusion that it is erroneous. It seems to be basically illogical, and not in accord with the mode of reaso...
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作者：Galbraith, VL; Thomas, DS
摘要：With the onset of World War II, the experience of the 2 decades separating it from the first makes possible the only analysis for some time to come of the normal impact of business cycles upon birth rates. Data more suitable than any formerly used were provided by computing maternal frequencies for each order of birth separately within each quinquennial age group of women in the reproductive period. These frequencies were summed for all age groups so as to give a total for each order of birth ...
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作者：Deming, WE; Stephan, FF
摘要：By historical precedence, and by law, one of the primary functions of the census is to provide a count or inventory of the population as it actually existed on a specified census date. For such purposes the census must be complete. As a basis for scientific generalizations and decisions for action, a census is only a sample. It gives data of the past, and inferences are drawn on the future. A well drawn sample will give the greatest amt. of information for the money expended. The size and type...
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作者：Zimmerman, CC
作者单位：Harvard University; Harvard University
