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251.
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《Journal of Statistical Computation and Simulation》2012,82(1):75-81
A power study suggests that a good test of fit analysis for the binomial distribution is provided by a data-dependent Chernoff–Lehmann X 2 test with class expectations greater than unity, and its components. These data-dependent statistics involve arithmetically simple parameter estimation, convenient approximate distributions and provide a comprehensive assessment of how well the data agree with a binomial distribution. We suggest that a well-performed single test of fit statistic is the Anderson–Darling statistic. 相似文献
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王庆旭 《青岛农业大学学报(社会科学版)》1991,(1)
通过田间及盆栽试验,利用西蒙1号药用甘暑蔓头研究了氮、磷、钾、沙综合因素对其产量的影响。结果表明,氮磷钾沙配配合施用,茎、叶、块根中的总糖含量较对照分别高7.35%、19.70%和18.7%左右,而且鲜薯增产10%左右,最高可达50%以上。其中,钾的作用最大,能使地上部与地下部生长趋于协调,促进块根膨大,而氮肥过多时会造成茎叶旺长致使产量降低。 相似文献
255.
Antonia Manzari 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2004,167(2):295-307
Summary. Features of census data make the editing and imputation phase a complex matter. Complex editing and imputation tasks can be tackled by dividing the editing and imputation process into subphases characterized by different problems, and finding appropriate solutions for each of them. An experimental application of the approach of combining different currently used methods for the editing and imputation of population census data is presented. 相似文献
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A treatment system consisting of an assessment/referral service, a detox, a mission, a hospital recovery unit, and three recovery homes was examined using a retrospective client-tracking approach over 1 year. There were 4,187 admissions to the system accounted for by 1,522 individuals; system users tended to be males, unmarried, unemployed, and in their 30s and 40s. The best predictor of readmission to the system after treatment was prior system use. Use patterns and referral data indicated that perceived gatekeepers (i.e., detoxication and assessment services) were not consistently coordinating the system and that more socially stable clients appeared to be more likely to be involved with non-addiction specific services (i.e., medical, general counselling). 相似文献
258.
R. L. Eubank Chunfeng Huang Y. Muñoz Maldonado Naisyin Wang Suojin Wang R. J. Buchanan 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2004,66(3):653-667
Summary. Smoothing spline estimators are considered for inference in varying-coefficient models with one effect modifying covariate. Bayesian 'confidence intervals' are developed for the coefficient curves and efficient computational methods are derived for computing the curve estimators, fitted values, posterior variances and data-adaptive methods for selecting the levels of smoothing. The efficacy and utility of the methodology proposed are demonstrated through a small simulation study and the analysis of a real data set. 相似文献
259.
Neigher W Ciarlo J Hoven C Kirkhart K Landsberg G Light E Newman F Struening EL Williams L Windle C Woy JR 《Evaluation and program planning》1982,5(4):283-311
The Federal Community Mental Health Centers Program (CMHC)-from 1963 to 1981-was heralded as a revolution in mental health care. Championed by many, and severely criticized by others, the actual impact of the program on the nation's mental health remains unclear. The authorization to evaluate the CMHC Program came originally from congressional legislation (PL 90-174), and later from the policies and regulations of NIMH under a series of Federal laws, notably PL 94-63. From 1976-1980, two dominant evaluation strategies were prevalent: funds expended by NIMH each year for studies of CMHC services or program-wide evaluations, and a much larger expenditure by CMHCs to conduct their own, independent evaluations following federal guidelines. As the Center's Program was turned over to the states in the form of block grants (PL 97-35), a group of professionals involved with setting and carrying out federal CMHC evaluation policy of both varieties met in public forum to debate the impact of these two evaluation approaches. While some participants cited gains in evaluation technology and impact upon local management of CMHCs, others found the lack of a coordinated and systematic approach to evaluating the CMHC Program to have been an opportunity missed. The impact of CMHC evaluation efforts are also discussed in terms of their major contribution to the field of evaluation research as a whole. 相似文献
260.