• Journal of the Korean Statistical Society
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• 제15권1호
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• pp.46-61
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• 1986

Many procedures for deriving the Moore-Penrose invese $X^+$ have been developed, but the explicit forms of Moore-Penerose inverses for design matrices in analysis of variance models are not known heretofore. The purpose of this paper is to find explicit forms of $X^+$ for the one-way and the two-way analysis of variance models. Consequently, the Moore-Penerose inverse $X^+$ and the shortest solutions of them can be easily obtained to the level of pocket calculator by way of our results.

• Journal of the Korean Statistical Society
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• 제5권1호
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• pp.29-34
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• 1976

The techniques about the analysis of variance for quantitative variables have been well-developed. But when the variable is categorical, we must switch to a completely different set of varied techniques. R.J. Light and B.H. Margolin presented one kind of techniques for categorical data in their paper, where there are G unordered experimental groups and I unordered response categories.

• 응용통계연구
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• 제19권2호
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• pp.231-240
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• 2006

일반적으로 쌍체 비교(paired comparison 또는 paired t test)가 효과적인 쌍으로의 구획을 통하여 소위 독립비교(group comparison)라고 일컫는 독립 이표본 t 검정(two-sample t test)보다 정밀한 결과를 제공하는 것으로 알려져 있다. 본 논문에서는 이와 같은 사실을 통계적으로 됫받침하기 위하여 두 방법의 정밀도를 보다 정량적으로 비교하였다. 독립 비교와 쌍체 비교가 각각 일원배치법과 이원배치법 (특히, 임의화 블록 설계법)의 특수한 경우이므로 각각에 상응하는 신뢰구간의 길이의 비로 정의된 비교 통계량은 분산분석의 통계량으로 표현된다. 다시 말해서, 이 통계량은 t 와 F 분포함수로 표현되므로 쉽게 독립비교와 쌍체비교의 정밀도를 비교할 수 있다. 실제로, 자주 쓰이는 유의수준에서는 쌍체표본 내에 구획 간의 유의한 변동이 있으면 쌍체비교가 독립비교보다 정밀할 가능성이 더 높다.

• Journal of the Korean Statistical Society
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• 제9권1호
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• pp.97-108
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• 1980

Variance components model appears often in designing experiments including time series data analysis. This paper is investigating the properties of the various procedures in estimating variance components for the two-way random model without interaction under normality. In this age of computer-oriented computations, MINQUE is found to be quite practicla because of the robustness with respect to the design configurations and parameters. Also adjusted AOV type estimation procedure is found to yield superior results over the unadjusted one.

• Journal of Preventive Medicine and Public Health
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• 제18권1호
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• pp.157-171
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• 1985

An attemption was made to estimate the effect of menopause on the mental health of climacteric women. The Minnesota Multiphasic Personality Inventory (MMPI) were questioned to 278 premenopausal women and 302 postmenopausal women. Data were analyzed by one-way analysis of variance in each variable of menopause, age, educational level, religion and partnership of husband, and two-way analysis of variance in two variables of menopause and one of other variables. The results were summarized as follows. 1. Menopause increased the scores of validity, psychopathic deviate, hypomania and paranoia scale, but conversely decreased the score of masculinity-femininity scale. 2. The older the climacteric women were, the lower scores of masculinity-femininity scale were observed. 3. The older the premenopausal women were, the higher scores of depression, hysteria, psychopathic deviate, psychasthenia and schizophrenia scale were observed, on the contrary, all scores of the postmenopausal women were decreased by the increment of their ages. 4. The higher the educational level of climacteric women were, the higher scores of correction and masculinity-femininity scale were observed, but the scores of hypochondriasis, hysteria, schizophrenia and social introversion scale were decreased by the increment of their educational level. 5. The scores of hypomania scale were higher in women of Buddhism than other religions. 6. The scores of validity, paranoia, psychasthenia, schizophrenia and social introversion scale were higher in widows than women with husband.

• 가족자원경영과 정책
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• 제4권1호
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• pp.15-28
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• 2000

The purpose of this study was to examine the knowledge about savings of customers who utilize Investment Trust Company and to analyze the factors affecting it. The data for the analysis were collected by structured questionnaires and consisted of 191 customers who utilize Investment Trust Company. Descriptive. Descriptive Statistics including percentage, frequency, means, and standard derivation, t-test, one-way ANOVA with Scheffe test, multiple regression analysis were used to analyze the data. The following is a summary of major findings. 1) The customers knowledge about savings showed generally low-level. Especially the knowledge about tax and regulation of savings were the areas shown the lowest level. 2) The age, marital status, education and occupation of customers and total period of utilizing company were the factors affecting the knowledge of customers in the one-way ANOVA analysis. 3) The result of regression analysis indicated that age of customers and total periods of utilizing company were the significant predictors of customers’knowledge. These two variables explained 25.77% of variance of customers’knowledge about savings.

• 응용통계연구
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• 제23권2호
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• pp.317-323
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• 2010

Measures are very useful tools for comparing the shape variability in statistical shape analysis. For examples, the Procrustes statistic(PS) is isolated measure, and the mean Procrustes statistic(MPS) and the root mean square measure(RMS) are overall measures. But these measures are very subjective, complicated and moreover these measures are not statistical for comparing the shape variability. Therefore we need to study some tests. It is well known that the Hotelling's $T^2$ test is used for testing shape variability of two independent samples. And for testing shape variabilities of several independent samples, instead of the Hotelling's $T^2$ test, one way analysis of variance(ANOVA) can be applied. In fact, this one way ANOVA is based on the balanced samples of equal size which is called as BANOVA. However, If we have unbalanced samples with unequal size, we can not use BANOVA. Therefore we propose the unbalanced analysis of variance(UNBANOVA) for testing shape variabilities of several independent samples of unequal size.

• 한국인구학
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• 제28권2호
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• pp.131-164
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• 2005

현재 노동시장 고용과제 중 큰 과제는 경기침체 등으로 비롯되는 청년실업의 문제다. 본 연구는 특히 지식 정보화시대에 IT 부문의 전문지식과 기술을 갖고 대학을 졸업하는 신규 전문인력의 취업률이 타 부문에 비해서 높을 것으로 생각되고 있으나 취업률이 비교적 저조하게 나타나는 경기 외의 요인을 분석하였다. IT 인력은 전체적으로 양적으로는 초과공급이지만 질적으로는 초과수요를 보이고 있는 점을 분석하였고 동일한 직업 내에도 학력별로 초과수요와 초과공급이 존재하는 것을 제시하였다. 본 연구는 미취업의 구조적 원인을 세부직업 부문별로 학력별로 인력이동의 저해가 발생하는 가를 실증적으로 추정 분석하였다. 그 결과 IT 노동시장의 26개 세부직업 부문 중 부문 간 저해는 15%, 부문 내 저해요인은 85%로 요인을 분석하였다. 그리고 IT 노동시장의 직업군별로 세부직업별/학력별 인력이동 저해요인을 분석하였다. 추정결과 이동 저해를 저해하는 학력별 요인이 세부직업별 요인보다 1.3배에서 11배 이상 인력이동을 더 제한하고 있었다. 학력별 요인이 큰 것은 직업 내 학력별로 IT 전문직업 능력의 차이 즉 기술 불일치를 반영하고 있었다. 오차의 크기도 직업군에 따라 다르게 나타나 IT 직업별 노동시장마다 다른 제도적 요인과 시장적 요인이 있음을 보여주었다. 정책제언은 신규 인력이 꼭 필요한 IT 전문직업 능력의 제고와 철저한 노동시장 수요를 기초로 초과공급으로 평가받은 IT 학과는 공급이 부족한 IT 학과로 전환시키거나 정원을 축소 조정할 것을 제안하였다.

• 수산해양교육연구
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• 제21권3호
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• pp.409-419
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• 2009

The purpose of this study was the examination of delinquency according to, narcissism, self-esteem, hostility and alienation of juvenile. For this, setting 172 students of an academic high school and 366 students of a vocational school(total 538) as the object of this study, the measures of Narcissistic Personality Scales, Self-Esteem Scales, Alienation Scales, and Delinquency Scales were inquired. The method of statistical analysis about these materials was composed of Two-way Analysis of Variance, One-way Analysis of Variance, and Multi-regression Analysis by using SPSS 10.0. The result, when delinquency was examined according to narcissism and self-esteem, in the case that narcissism was highest, self-esteem was lowest, delinquency was highest. When delinquency was examined according to narcissism and hostility, in the case that narcissism was highest, hostility was highest, delinquency was highest. When delinquency was examined according to narcissism and alienation, in the case that narcissism was highest, alienation was highest, delinquency was highest. And, when Multi-regression Analysis about the effect of narcissism, self-esteem, hostility and alienation on delinquency was administrated, the variation that affected delinquency significantly was narcissism, hostility and alienation. That is, we could look forward that the more narcissists feel hostility and alienation, the higher they have delinquency.

• 수산해양교육연구
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• 제21권3호
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• pp.459-469
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• 2009

The purpose of this study was to examine the relation between career options and career barriers of fisheries and marine science college students. The subjects in this study were 1,309 students(male 628, female 681), who were analyzed with 6 career items and career barrier inventory. Data analyses were conducted using t-test, One-way Analysis of Variance, Two-way Analysis of Variance. The results of the research are as follows. First, the career barriers factors that students experienced a lot were future anxiety and lack of career informations. Accoding to sex, there was no meaningful differences on the career barriers, but accoding to grades, there was meaningful differences on the career barriers. Second, career barriers showed high level in case that students chose their majors accoding to the factors of professors, score level and others' admonition. And career barriers was higher in cases of the students who had the level of below the common satisfaction on their majors, who had a minor or temporary absence from school because their majors were unsatisfied, who took courses with their pals, who chose their jobs in terms of pay level and working region, and who had uncertainty on their apptitude and interesting.