Showing papers in "Journal of the American Statistical Association in 1925"
2,657 citations
TL;DR: In this article, it was shown that the difference in the results obtained from the arbitrary and mathematical formulae are often very large and that the theoretical selling price must be computed simultaneously from a pair of equations which are frequently a bit complicated.
Abstract: In the older treatments of depreciation the cost, or “theoretical selling price” of the product of a machine, was conceived of as determined causally by the addition of a number of items of which depreciation is one. In other words, depreciation was first computed by some rather arbitrary formula not involving the theoretical selling price, which was then found by the addition of depreciation to operating costs and division by quantity of output. It will be shown in this paper that depreciation and theoretical selling price must be computed simultaneously from a pair of equations which are frequently a bit complicated. The differences in the results obtained from the arbitrary and mathematical formulae are often very large.
354 citations
172 citations
TL;DR: The application of statistics as an aid in maintaining quality of a Manufactured Product Journal of the American Statistical Association: Vol 20, No 152, pp 546-548 as discussed by the authors.
Abstract: (1925) The Application of Statistics as an Aid in Maintaining Quality of a Manufactured Product Journal of the American Statistical Association: Vol 20, No 152, pp 546-548
168 citations
TL;DR: In this article, the Unstable Dollar and the So-Called Business Cycle are discussed. But they focus on the so-called business cycle and do not consider the economic cycle.
Abstract: (1925). Our Unstable Dollar and the So-Called Business Cycle. Journal of the American Statistical Association: Vol. 20, No. 150, pp. 179-202.
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TL;DR: In this article, Forecasting the Acreage of Cotton, the authors forecasted the area of cotton in the United States by predicting the number of cotton seedlings in each year.
Abstract: (1925). Forecasting the Acreage of Cotton. Journal of the American Statistical Association: Vol. 20, No. 149, pp. 31-47.
17 citations
15 citations
TL;DR: In this article, a form of saturation curve is proposed for estimating the Saturation Curve, and it is shown that this form of the curve can be used to estimate the saturation curve.
Abstract: (1925). A Form of Saturation Curve. Journal of the American Statistical Association: Vol. 20, No. 151, pp. 390-396.
TL;DR: In the case of growing children, this is an important factor, and is generally recognized where child-data are being worked with as discussed by the authors. But even with adults, there is the change which occurs with the day's activity, particularly in such matters as height, or weight.
Abstract: In an investigation of the variability of a population, there are a number of sub-variabilities which can be studied, all of which must be taken into consideration when a study of the general variability of a population in a given trait is to be made. Thus, there is, besides the individual variability, that of the individuals themselves from day to day. In the case of growing children, this is an important factor, and is generally recognized where child-data are being worked with. But even with adults, there is the change which occurs with the day's activity, particularly in such matters as height, or weight. Again, a population is not made up of isolated individuals, but is composed of family lines, and the variability of these is important, as well as the variation within the families. Although great attention is usually paid to the differing variabilities of populations taken as a whole, these others have usually been overlooked. The present paper is concerned with variations within the family strains, and between these strains, in the Negro-White population of New York City.2 The measurements were taken at Public School 89, Manhattan, a school the pupils of which are about 98 per cent Negro. The amount of mixture which has gone into the racial composition of this population, is, of course, an unknown quantity, but there is strong reason to believe that an estimate of 15 to 20 per cent pure Negro would be high. In other words, the population is almost entirely mixed. By measuring the variability of family strains an indication may be had of the amount of mixture, and, at the same time, a measure of the variability within these family lines. The statistical procedure needed for such analysis was given by Boas in a paper published some time ago.3 The writer also has prepared a paper4 dealing with the
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