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71.
72.
Ronald J. Bosch 《统计学通讯:理论与方法》2013,42(11):3075-3083
When cubic smoothing splines are used to estimate the conditional quantile function, thereby balancing fidelity to the data with a smoothness requirement, the resulting curve is the solution to a quadratic program. Using this quadratic characterization and through comparison with the sample conditional quan-tiles, we show strong consistency and asymptotic normality for the quantile smoothing spline. 相似文献
73.
Standard methods for analyzing binomial regression data rely on asymptotic inferences. Bayesian methods can be performed using simple computations, and they apply for any sample size. We provide a relatively complete discussion of Bayesian inferences for binomial regression with emphasis on inferences for the probability of “success.” Furthermore, we illustrate diagnostic tools, perform model selection among nonnested models, and examine the sensitivity of the Bayesian methods. 相似文献
74.
A vector autoregression is fit to recent U.S. data on wheat prices, wheat export sales, wheat export shipments, and exchange rates. Forecast error decompositions and out-of-sample forecasts indicate that exchange rates have little influence on wheat sales and shipments. 相似文献
75.
76.
Ronald L Iman 《统计学通讯:理论与方法》2013,42(5):1513-1540
Iman and Connver (1985, 1987) have suggested the top-down correlation coefficient as a measure of association when n objects are ranked by two or more independent sources and interest centers primarily on agreement in the top rankings, with disagreements on items at the bottom of the rankings being of little or no importance. The top-down correlation coefficient results from computing the ordinary Pearson correlation coefficient on Savage scores. Quantiles of the exact distribution of the top-down correlation coefficient based on the assumption of independent rankings are provided for n = 3(1)14. 相似文献
77.
We consider the calculation of power functions in classical multivariate analysis. In this context, power can be expressed
in terms of tail probabilities of certain noncentral distributions. The necessary noncentral distribution theory was developed
between the 1940s and 1970s by a number of authors. However, tractable methods for calculating the relevant probabilities
have been lacking. In this paper we present simple yet extremely accurate saddlepoint approximations to power functions associated
with the following classical test statistics: the likelihood ratio statistic for testing the general linear hypothesis in
MANOVA; the likelihood ratio statistic for testing block independence; and Bartlett's modified likelihood ratio statistic
for testing equality of covariance matrices. 相似文献
78.
This paper examines some of the connecting links between modernization in a developing society, particularly urbanization and increased education for women, and preferences for number of children. Using 1973 Taiwan data, preferences for smaller families are found to be consistently related to modern attitudes and behavior in the three domains examined: intrafamilial husband-wife role relationships, extrafamilial activities of the wife, and familial and religious values relating the family to the larger institutional setting. Modernization of these attitudes, behaviors, and values has an impact on reproductive goals independent of their association with structural variables. The wife's outside activities and exposure to modern influences through the mass media are especially important linkages, having a particularly strong mediating effect in the education effect on preferences. Intrafamilial relations appear to be of less importance. Modernization of familial and religious values mediates between urbanization and family size preferences. The measure of preference used is a scale value which has been found in other research to be more predictive of reproductive behavior than the conventional single-valued statement of number of children wanted. As the level of contraceptive use rises in developing societies, family size preferences increasingly become a factor in birth rates, and understanding the sources of change in these preferences takes on added importance. The policy implications of these findings are discussed. 相似文献
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