• Title/Summary/Keyword: Pearson's $X^2$ test

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GENERALIZED MINIMUM $x^2$ TEST FOR THE EXTREME VALUES

  • Lee, Chun-Jin
    • Journal of applied mathematics & informatics
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    • v.1 no.1
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    • pp.43-48
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    • 1994
  • There are some difficulties in applying the Pearson's Chi-Square Test for the continuous distribution. The problems include how to form class intervals for the test of fit how to employ in the test when the estimators of parameters are obtained from the ungrouped sample so on. In order to solve these problems we use the generalized minimum Chi-Square technique which is a test free of the complications associated with the Peason's Chi-Square test. This paper show how to apply the goodness of fit tests based on generalized minimum Chi-Square technique to the extreme values.

A Unified Measure of Association for Complex Data Obtained from Independence Tests (혼합자료에서 독립성 검정에 의한 연관성 측정)

  • 이승천;허문열
    • The Korean Journal of Applied Statistics
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    • v.16 no.1
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    • pp.151-167
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    • 2003
  • Although there exist numerous measures of association, most of them are lacking in generality in that they do not intend to measure the association between heterogeneous type of random variables. On the other hand, many statistical analyzes dealing with complex data sets require a very sophisticate measure of association. In this note, the p-value of independence tests is utilized to obtain a measure of association. The proposed measure of association have some consistency in measuring association between various types of random variables.

A unified measure of association for complex data obtained from independence tests (혼합자료에서 독립성검정에 의한 연관성 측정)

  • Lee, Seung-Chun;Huh, Moon Yul
    • The Korean Journal of Applied Statistics
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    • v.34 no.4
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    • pp.523-536
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    • 2021
  • Although there exist numerous measures of association, most of them are lacking in generality in that they do not intend to measure the association between heterogeneous type of random variables. On the other hand, many statistical analyzes dealing with complex data sets require a very sophisticate measure of association. In this note, the p-value of independence tests is utilized to obtain a measure of association. The proposed measure of association have some consistency in measuring association between various types of random variables.

Report on the Effects Lipemic Specimen in Anti-ds DNA Antibody Test (Anti-ds DNA 항체 검사 시 Lipemic 검체의 영향에 관한 보고)

  • Cheon, Jun Hong;Kim, Whe Jung;Kim, Sung Ho;Moon, Hyoung Ho;Yoo, Seon Hee
    • The Korean Journal of Nuclear Medicine Technology
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    • v.18 no.1
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    • pp.153-157
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    • 2014
  • Purpose: SLE (systemic lupus erythematosus) is an inflammatory autoimmune disease, characterized by various autoantibody. The detection of Anti double-stranded DNA (Anti-ds DNA) is important in the diagnostics of SLE, and include the American College of Rheumatology (ACR) diagnostic criteria for SLE. Also SLE disease activity and correlativity with the level Anti-ds DNA antibody have been reported and Anti-ds DNA antibody quantitative test is very useful for tracing before and after SLE treatment. When These Anti-ds DNA antibody test (Farr assay: $^{125}I$ labeled ds-DNA and bound Anti-ds DNA antibodies complex in serum is precipitated by ammonium sulfate and used to centrifugation, measured it) inhaled supernatant after centrifugation, a lipemic specimen does not facilitate the formation of precipitate and also occurs situation was inhaled with precipitate. To solve these problems, The Influence of the degree of lipemic specimen was evaluated. Materials and Methods: September 2012 to February 2013, We selected lipemic samples (n=81) of specimen commissioned by Anti-ds DNA antibody test. Lipemic samples were done pre-treatment (high-speed centrifugation: 14,000 rpm 5 mins) used a micro-centrifuge (Eppendorf Model 5415D). At the same time lipemic specimen and pre-treatment samples were performed Anti-ds DNA antibody test (Anti-ds DNA kit, Trinity Biotech, Ireland). Statistical analysis were analyzed Pearson's correlation coefficients and regression and paired t-test, and Difference (%). Results: Experimental group 1 (Lipemic Specimen Anti-ds DNA Ab concentration ${\leq}7IU/mL$) at y=0.368X+4.732, $R^2=0.023$, Pearson's correlation coefficient was 0.154, paired t-test (P=0.003), Difference (%) mean 65.7 and showed a statistically significant difference. Experimental group 2 (Lipemic Specimen Anti-ds DNA Ab concentration ${\geq}8IU/mL$) at y=0.983X+0.298, $R^2=0.994$, Pearson's correlation coefficient showed 0.997, paired t-test (P=0.181), Difference (%) mean -5.53 made no statistically significant difference. Conclusion: Lipemic sample of low Anti-ds DNA Ab concentration (2.5-7 IU/mL) and the result is obtained pre-treatment (high-speed centrifugation: 14,000 rpm 5 mins) were made a significant difference statistically. Anti-ds DNA is one of the primary auto-antibodies present in patients with SLE, and remain an important diagnostic test for SLE. Therefore, we recommend preprocessing (high-speed centrifugation: 14,000 rpm 5 mins) in order to exclude the influence of lipemic specimen.

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Clothing Shopping Orientations and Utilizations of Information Sources according to Values of Male Consumers Aged between the 20's and the 30's (20-30대 남성소비자의 가치의식에 따른 의류쇼핑성향과 정보원활용)

  • Kim, Ju-Hee;Park, Ok-Lyun
    • Korean Journal of Human Ecology
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    • v.13 no.2
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    • pp.291-300
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    • 2004
  • The purposes of this study were to research the clothing shopping orientations and the utilizations of information sources according to values of male consumer aged between the 20's and the 30's. The data were analyzed by factor analysis, one-way ANOVA, Duncan's multiple range test, x2- test, Pearson's correlation. The results of the study were as follows: 1. Male consumer's values were classified into 2 factors, and consisted of three groups. 2. There were significant differences among groups according to demographics variables. 3. Clothing shopping orientations were classified into 6 factors and information sources were classified into 3 factors. 4. There were relationships between male consumer's values, clothing shopping orientation, and utilization of information sources.

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A Study on the Consumer Complaining Behavior (소비자불평행동에 관한 연구 - 불만족의 귀인을 중심으로)

  • 박진영;문숙재
    • Journal of Families and Better Life
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    • v.8 no.1
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    • pp.15-30
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    • 1990
  • The purpose of this study was to provide basic data for consumer complaining behavior. For this purpose, questionaire was given to 600 individuals who have resided in Seoul as the housewife consumer and possessed the experience to use the purchased refrigerators within the period of 5 years. 437 data were analyzed by the statistical methods like frequency, percentage, ANOVA, Duncan's Multiple Range Test, X2-test, Pearson's correlation and multiple regression analysis. The results of this study were described as follows; 1) Complaining behavior have shown significant differences according to housewife's age, degree of perceived housewife's consumer education, husband's job and housewife's job. 2) The type of attribution of dissatisfaction have shown significant differences according to husband's job, housewife's job and family income. 3) There was significant difference in the complaining behavior according to the type of causal attribution and responsibility attribution. 4) The complaining behavior was influenced by causal attribution of dissatisfaction, responsibility attribution of dissatisfaction, family income, degree of perceived housewife's consumer education, husband's job and housewife's age. And the relative contribution of each variable explaining the complaining behavior was decreased according to the order of variables that were described.

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The Effect of College Students' Psychological Well-being and Interpersonal Competence on Career Decision-Making Self-Efficacy (대학생의 심리적 안녕감, 대인관계 유능성이 진로결정자기효능감에 미치는 영향)

  • Kwon, Myoungjin;Kim, Sun Ae
    • Journal of Convergence for Information Technology
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    • v.12 no.5
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    • pp.62-70
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    • 2022
  • This study was attempted to understand the effect of university students' psychological well-being and interpersonal competence on their career decision-making self-efficacy. The participants of this study were 154 university students, and data collection was conducted from November 1 to December 10, 2019. The collected data were analyzed using x2-test, t-test, ANOVA, Pearson's correlation coefficients, and stepwise multiple regression. Psychological well-being and interpersonal competence were found to be significant influencing factors on career decision-making self-efficacy and the explanation power was 41.6% (F=66.48, p<.001). When establishing a program that can improve career decision-making self-efficacy of university student, psychological well-being and interpersonal competence, which are factors that affect career decision self-efficacy revealed through the results of this study, should be considered.

Relations between Conjugal Power and Violence according to Social Class (사회계층에 따른 부부의 권력과 폭력과의 관계)

  • 전춘애
    • Journal of the Korean Home Economics Association
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    • v.27 no.3
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    • pp.133-146
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    • 1989
  • The purpose of this study was to investigate the differences of conjugal power type and conjugal violence level according to social class. This study was also intended to examine the relations between conjugal power type and conjugal violence level. The subjects of this study were 492 high school students in Seoul. Conjugal power was measured with used to measure the conjugal violence level. For the statistical analysis of data, x2-test, Pearson's r, F-test, Duncan's Multiple Range Test and Cronbach's α for reliability were performed. The major results of this study were summarized as follows; 1. There were significant differences according to social class in conjugal power type: The higher social class of the family, the more Syncratic Type were found. And the lower social class of the family, the more Wife Dominant Type were found. 2. There were significant differences according to social class in conjugla violence level: Couples of the lowest class appeared to be more verbal aggression and physical violence. 3. The most severe Husband-to-Wife verbal aggression and physical violence were appeared when the conjugal power type is either Husband Dominant Type or Wife Dominant Type.

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Effects of Stress and Self-esteem on Depression in Middle-aged Women and Middle-aged Men (중년여성과 중년남성의 스트레스와 자아존중감이 우울에 미치는 영향)

  • Jo, Nam-Hee;Seong, Chun-Hee
    • Journal of the Korea Convergence Society
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    • v.7 no.6
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    • pp.89-97
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    • 2016
  • The purposes of this study was to identify the significant predictors of depression. The data were collected using questionnaire from the sample of 114 middle-aged women and 125 middle-aged men. The data were collected through self-report questionnaires, which were constructed to include stress, self-esteem, and depression. Data were analyzed using frequencies, means, $X^2$-test, Analysis of Covariance, Pearson's correlation coefficients, and multiple regression analysis with SPSS 18.0. The significant predictors of depression for middle-aged women were stress(${\beta}=.387$, p<.001), self-esteem(${\beta}=-.249$, p<.05), health perception(${\beta}=-.191$, p<.05), explaining 43.1% of the variance in depression. The significant predictors of depression for middle-aged men were self-esteem(${\beta}=-.429$, p<.001), stress(${\beta}=.322$, p<.001), explaining 56.0% of the variance in depression.

The study on the Shopping behavior according to fashion consciousness of Male Consumers (남성소비자의 패션의식에 따른 쇼핑행동연구 -구매행동, 쇼핑성향, 정보원활용을 중심으로-)

  • Kim, Ju-Hee;Park, Ok-Lyun
    • Korean Journal of Human Ecology
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    • v.14 no.1
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    • pp.167-178
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    • 2005
  • The purpose of this study is to research male consumers' shopping behavior according to their fashion consciousness. For the purpose, the data collected were analyzed by factor analysis, one-way ANOVA, Duncan's multiple range test X2-test, and Pearson's correlation. The results of the study are as follows: 1. Male consumers' fashion consciousness were classified into 4 groups-Impulse Buying Consciousness Group, Brand Consciousness Group, Style Consciousness Group, and Fashion Indifference Group-by the following 6 factors: Impulse Buying Consciousness, Brand Consciousness, Style Consciousness, Trend Consciousness, Price Consciousness, Consumption Expenditure Consciousness. 2. There were significant differences existed among each group according to clothing purchase behavior, shopping orientation, and use of information sources. 3. There were a relationship among male consumers' fashion consciousness, their use of information sources, and their shopping behavior including clothing shopping orientation.

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