• Journal of the Korean Statistical Society
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• v.26 no.2
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• pp.245-259
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• 1997

The paper shows that certain hierachical Bayes (HB) predictors for small domain data in repeated surveys "universally" or "stochastically" dominate all linear unbiased predictors. Also, the HB predictors are "best" within the class of all equivariant predictors under a certain group of transformations.tain group of transformations.

• Communications for Statistical Applications and Methods
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• v.20 no.6
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• pp.427-438
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• 2013

Based on progressive Type II censored sampling which is an important method to obtain failure data in a lifetime study, we suggest a very general form of Bayesian prediction bounds from two parameters exponentiated Weibull distribution using the proper general prior density. For this, Markov chain Monte Carlo approach is considered and we also provide a simulation study.

• Communications for Statistical Applications and Methods
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• v.5 no.1
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• pp.67-75
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• 1998

A new graphical method, named transformed quantize-quantile (TQQ), of a quantize-quantile (Q-Q) Plot is developed for the detection of deviations from the normal distribution. It will be shown that TQQ is helpful for detecting patterns of how points depart from normality. TQQ characteristics of the various kinds of representations are illustrated by a generated sample from a composite of a normal distribution and a clinical example for TQQ is constructed and explained.

• Communications for Statistical Applications and Methods
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• v.25 no.5
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• pp.545-557
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• 2018

The inclusion of covariates in the model often affects not only the estimates of meaningful variables of interest but also its statistical significance. Such gap between statistical and subject-matter significance is a critical issue in huge sample studies. A popular huge sample study, the sample cohort data from Korean National Health Insurance Service, showed such gap of significance in the inference for the effect of obesity on cause of mortality, requiring careful consideration. In this regard, this paper proposes a sample size calibration method based on a Monte Carlo t (or z)-test approach without Monte Carlo simulation, and also proposes a test procedure for subject-matter significance using this calibration method in order to complement the deflated p-value in the huge sample size. Our calibration method shows no subject-matter significance of the obesity paradox regardless of race, sex, and age groups, unlike traditional statistical suggestions based on p-values.

• Management & Information Systems Review
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• v.35 no.2
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• pp.185-203
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• 2016

This study set up a study model through a previous study and aims to determine the control effect by organizational support in the effect relationship between consulting performance which is an independent variable and organizational performance which is a dependent variable. To do that, the hypothesis was verified by using statistical programs such as SPSS 20.0 and AMOS 20.0 which can be statistically useful with 511 copies except for the copies which cannot be utilized, over 4 weeks from February $25^{th}$ to March $24^{th}$, 2015, focusing companies located in Seoul, Gyeonggi, Incheon. The hypothesis testing result of the study model set by this study shows that firstly, this study has contributed to establishing an additional theory in the research between consulting performance and organizational performance while it has not been enough for consulting performance and organizational performance in previous studies. Second, although the moderating variable of organizational support in the effect relationship between consulting performance and organizational performance didn't show a partial positive (+) role in the hypothesis testing, more detailed analysis in the survey process and the variety on questionnaire configuration were provided in the variable selection. Third, as consulting performance shows a positive effect on organizational performance, a higher consulting performance gives a direct impact on organizational performance so that a realistic action plan on internalizing and enhancing consulting execution result into organizational performance is aggressively required.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.8
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• pp.2888-2898
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• 2010

It has been over a decade since the business consulting services by SMBA started in order to build up competitiveness through supporting small and medium enterprises under the business environment of globalization. No matter how there is no post empirical data of evaluation. Therefore, this study is focused on analysing the practical performance of Coupon System Management Consulting(CSMC) by comparing the financial condition for a few years before and behind since the companies have been involving in. As a result, the statistical significances of research hypotheses were rejected for the most part. Moreover, the growth rates of sales and total assets of which each of them is one of the indicators concerning growth and activity, are negatively significant, which means that CSMC the needs comprehensive consideration about its efficiency and in all its aspects.

• Journal of the Korean Data and Information Science Society
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• v.9 no.2
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• pp.323-336
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• 1998

This thesis is to propose the method of evaluating the validity in stages on the design of a checklist based on the estimate theory of the validity on the design of a checklist and the method of evaluating the validity accordy to the purpose for usiug checklist and establish the standards of estimating the validity in stages on the checklist owing to the estimate theory with the journal, Journal of the Korean Society of Clothing and Textiles. We are emboding the statistical consulting server using the proposed estimate method of the validity and the followings we the questions to solve in future. First, there are many kinds of the statistical methods used in the fields of learing and applied technalogy. So we must establish the statistical standars required in each field and study and develope the special statistical checklists. Second, it is neded to systemize the estimate methods and standard on the validity by building the statistical consult DB, evaluate the researchers according to the degrees of statistical knowledge the validity of study design iud propose the delicate and generalized statistical methods appropriate to the ability of researchers.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2005.05a
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• pp.545-553
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• 2005

The purpose of this study is to analyse consumer injury and to find current status of industrial consumer injury in the field of consumer product. Also the subject under analysis is to develop a design guidance for the consumer product safety. we used consulting data of Korea Consumer Protection Board, Korea Product Liability Consulting Center and referred to statistic data of Korea National Statistical Office. Consumer injury data of Korea is insufficient comparing with leading industrialized nations. Therefore, we categorized hazard factors based on current injury data in Korea instead of analysing injury data statistically. And we analyse the hazard factors using the analytic hierarchy process in this study. Through the results, we defined the Consumer Injury Index(CII) to develop a design guidance for the consumer product safety.

• Korea Journal of Hospital Management
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• v.6 no.2
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• pp.156-172
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• 2001

Financial ratio indicators of the 73 sample hospitals provided by the Korea Hospital Association in 1998-1999, together with the data by the Korea Health Industry Development Institute in 1007, were analysed to identify the financial structure and managerial performance of the profit/loss-making hospitals under the IMF. The major findings of this study were as belows. 1. Among the general characteristics, there was a statistical significance in the hospital location and the number of operating beds between profit-making hospitals and loss-making hospitals. 2. Financial ratio indicators of the profit-making hospitals were better than those of the loss-making hospitals. 3. Financial ratio indicators, including Liquidity, Performance Indicators and Growth Rate Indicators of profit-making hospitals, were better than those of loss-making hospitals except for Turnover Ratios under the IMF economic impasse.

• Journal of Digital Contents Society
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• v.10 no.4
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• pp.551-560
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• 2009

Under the recent global business environment and active e-commerce era through digital media, the decision on the exporting companies' brand and web domain development is a very crucial strategic choice. Especially, since web domain development is closely related with company's brand strategy, this study is conducted to research the decisive factors of exporting brand strategy on the basis of the need research results on Korean exporting company's overseas brand and domain development strategy. As presented in statistical results, in case of Korean exporting businesses, the level of OEM brand export was when there was high export competitiveness and the level of OEM brand export was high when there was higher uncertainty about the environment. This supports the hypotheses on the basis of existing research documents. However, the similarities of markets failed to bring out any statistical meaningful influence. As the second result, businesses with high export competitiveness tend to select global brand strategy and businesses with high environment uncertainty tend to choose local brand strategy. However, the similarity of markets failed to show any statistical meaningful influence.