Go to the main menu
Skip to content
Go to bottom
REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Applied Statistics
Journal Basic Information
Journal DOI :
The Korean Statistical Society
Editor in Chief :
Volume & Issues
Volume 8, Issue 2 - Sep 1995
Volume 8, Issue 1 - Mar 1995
Selecting the target year
A survey of misuses of statistical graphics in Korean mass media and a study for statistical and institutional solutions to misuses
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 1~26
Today, newspapers and newsmagazines are using statistical graphics to provide information and highlight the essense of newspaper stories. When statistical graphics do not present meaningful information accurately, concisely, and in easy-to-understand language, the publication risks a loss of credibility with its readers. Too often newspapers and newsmagazine run faulty graphics. The surge in the use of statistical graphics have created new problems and challengers for editors and artists of newspapers and magazines. We summerize and study the misuse of statistical graphics by means of the research of newspaper and newsmagazine. Experiments were employed to explore the effects of the distorted graphs. This paper suggests the statistical rules for avoiding the pitfalls of statistical graphics and institutional solutions for reforming the knowledge of artists and readers about statistical graphics.
A study of the efficiency comparison of the Black-Box method with the randomized response technique
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 27~41
In this paper, the proportion of durg-abuse and gas/bond-inhalation among the high school students in Kwangju and Chonnam has been estimated using the survey of the Black-Box method and randomized response technique. We have analyzed empirically the effects of both methods for the surveys of sensitive characters.
A study on the sample design of the fishery household economy survey
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 43~54
The fishery household economy survey is a sample survey which produce estimates on the fishery household economy and fishery management in Korea. We propose a sample design for this survey. This design is developed based on results of 1990 fishery census and Shi-Do is assumed to be subpopulation for Shi-Do estimates. Samples are selected by stratified two-stage cluster sampling in Shi-Do and income function is found for stratification. Fishery household income is estimated by a linear estimator.
Three-level Skip-lot sampling plan split by two stages
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 55~64
Three-level Skip-lot sampling plan split by two stages (Split2-SkSP0 is proposed by modifying multi-level skip-lot sampling plan proposed by Choi(1993), which has normal and terrace inspections on the first and the second stages, respectively. The plan is designed to work more higher level inspections when the quality of the submitted products are good, otherwise, return to the normal or the terrace inspection as fast as possible. Also, the formula of the operating characteristic function for the split skip-lot sampling plan is derived using the Markov chain approach. Also, operating characteristic properties of the proposed plans are studied and graphically compared with those of the multi-level skip-lot sampling plans.
Nonparametric test on dimensionality of explantory variables
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 65~75
For the determination of dimension of e.d.r. space, both of Sliced Inverse Regression (SIR) and Principal Hessian Directions (PHD) proposed asymptotic test. But the asymptotic test requires the normality and large samples of explanatory variables. Cook and Weisberg(1991) suggested permutation tests instead. In this study permutation tests are actually made, and the power of them is compared with asymptotic test in the case of SIR and PHD.
A robust test for the parallelism of two regression lines
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 77~86
For the problem of testing the parallelism of two regression lines, a robust procedure is proposed and examined. The proposed test statistic is based on the one-step GM-estimators of slope parameters proposed by Song et al. (1994b). These GM-estimators used the Least Trimmed Squares estimates as an initial values so as to obtain high breakdown point. Through a small-sample Monte Carlo simulation the empirical levels and powers of the proposed test are compared with other tests under various error distributions.
Simulation analysis of type I error and power for F test and rank transformed F test in
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 87~97
When there is no main effcts or only one main effect in a
factorial design, Type I error rates and power for the rank transformed F test (FR test) for interaction are nearly equal to those of the classical F test. However the power of FR test is quite superior under the exponential distribution rather than the of FR test is quite superior under the exponential distribution rather than the normal distribution. Meanwhile when both main effects are in the model, Type I error rates of FR test, compared with those of F test, decrease as the effect size increases and are dependent on the fashion in which main effects are constructed. In addition, the power of FR test increases as the effect size and the sample size increase and is highly dependent on the manner in which main effects are constructed and the type of population distribution.
Two-stage Latin hypercube sampling and its application
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 99~108
When modeling a complicated system with a computer model, it is of vital importance to choos input values efficiently. The Latin Hypercube sampling (LHS) proposed by MaKay et al.(1979) has been most widely used for choosing input values for a computer model. We propose the two-stage Latin Hypercube sampling(TLHS) which is an improved version of the LHS for procucing input values in estimating the excectation of a function of the output variable. The proposed method is applied to simulation study of the performance of a printer actuator and it is shown to outperform the other sampling methods including the LHS in accuracy.
Two-sample chi-square test for randomly censored data
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 109~119
A two sample chi-square test is introduced for testing the equality of the distributions of two populations when observations are subject to random censorship. The statistic is appropriate in testing problems where a two-sided alternative is of interest. Under the null hypothesis, the asymptotic distribution of the statistic is a chi-square distribution. We obtain two types of chi-square statistics ; one as a nonnegative definite quadratic form in difference of observed cell probabilities based on the product-limit estimators, the other one as a summation form. Data pertaining to a cancer chemotheray experiment are examined with these statistics.
Optimal design of partially step-stress life testing for the series systems
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 121~132
In this paper we consider optimal designs of partially step-stress life testing which is deviced for k-component series systems with the considerably long life time. Test items are first run simultaneously at use condition for a specified time, and the surviving items are then run at accelerated condition until a predetermined censoring time. The optimal criterion for the change time to accelerated condition is to minimized either the generalized asymptotic variance of maximum likelihood estimators of the hazard rates at use condition and the acceleration factors or the asymptotic variance of the maximum likelihood estimators of the acceleration factors.
Field data analyses for repairable products
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 133~145
This paper is concerned with the method of estimating lifetime distribution from field data for repairable products with multiple modes of failure, and is an extension of Bai et al.(1995). The log linear function is considered as a model for describing the relation between failure time of a product and covariates. Using the nonhomogeneous poisson process, general methods for obtaining pseudo maximum likelihood estimators(PMLEs) for the parameters are outlined and specific formulas for Weibull distribution are obtained. Effects of follow-up percentage on the PMLEs are investigated. Extension to case-cohort design is also considered.
Overdispersion in count data - a review
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 147~161
The primary objective of this paper is to review parametric models and test statistics related to overdspersion of count data. Poisson or binomial assumption often fails to explain overdispersion. We reviewed real examples of overdispersion in count data that occurred in toxicological or teratological experiments. We also reviewed several models that were suggested for implementing experiments. We also reviewed several models that were suggested for implementing the extra-binomial variation or hyper-Poisson variability, and we noted how these models were generalized and further developed. The approaches that have been suggested for the overdispersion fall into two broad categories. The one is to develop a parametric model for it, and the other is to assume a particular relationship between the variance and the mean of the response variable and to derive a score test staistics for detecting the overdispersion. Recently, Dean(1992) derived a general score test statistics for detecting overdispersion from the exponential family.
Probabilities of hands in 1 person seven-card stud
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 163~177
In this tutorial note, we present an instructive approach to computing probabilities of hands in 1 person seven-card stud.
Probabilities and mechanics of a cuboctahedral die
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 179~185
We present comprehensive mechanical interpretations for probabilities of a cubotahedral die.
A study on a regression model with nonlinear time series errors
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 187~200
This paper is concerned with a regression model with nonlinear time series errors. Testing procedures for linearity of error terms are studied. To this end, large-sample properties of estimators of regression parameters and autoregression parameter are obtained. These results are then used to develop test statistics for testing linearity of errors. Some simulation studies are shown.
A bootstrap approach for factor numbers in binary data
Korean Journal of Applied Statistics, volume 8, issue 2, 1995, Pages 201~216
A method of determining the factor numbers is explored in this paper, when data and the factors are binary. We applied a bootstrap approach and proposed a criterion for the method. Simulation results suggest that the proposed method in this paper is very useful in determining the factor numbers for binary data and factors.