• 제목/요약/키워드: Statistical

검색결과 32,993건 처리시간 0.059초

통계공학을 위한 R 패키지 응용 (Applications of R package for statistical engineering)

  • 장대흥
    • 응용통계연구
    • /
    • 제33권1호
    • /
    • pp.87-105
    • /
    • 2020
  • 통계공학은 실험계획법, 품질관리/품질경영, 신뢰성공학으로 구성된다. R은 무료로 개방되어 있는 통계패키지로서 통계모형, 통계 계산 및 통계 그래픽 관련 패키지가 방대하다. 우리는 이러한 R 패키지를 통계공학을 위한 기본 통계패키지로 유용하게 사용할 수 있다. 본 논문에서는 통계공학을 위한 R 패키지 응용을 살펴보고 통계공학 관련 CRAN Task Views가 필요함을 제안하였다.

최근 10년간(2000-2009) 사상체질의학회지 게재논문의 통계분석방법에 대한 연구 (An Evaluation of the Statistical Techniques Used in Papers of the Journal of Sasang Constitutional Medicine (2000-2009))

  • 박기현;김상혁;김홍기;이시우
    • 사상체질의학회지
    • /
    • 제22권4호
    • /
    • pp.49-55
    • /
    • 2010
  • 1. Objectives The purpose of this study is to assess the statistical methods used in the Journal of Sasang Constitutional Medicine and to identify the types of errors in the statistical analysis. 2. Methods We have reviewed quantitative articles published in the Journal of Sasang Constitutional Medicine from 2000 to 2009. Except for the case report, a total of 505 articles was reviewed by year. We focused on the methods of statistics in these articles. We have analysed the number of thesis used the statistical methods, the number of the statistical methods, the types of the statistical methods, and the errors of the statistical methods with the object of 202 thesis used the statistical method. 3. Results 1. Of the 370 articles, 202 used inferential statistics. 2. The most dominant was the thesis with one type of the statistical method forming 61.9% (125 thesis) of the total. 3. The ANOVA was the statistic of choice overall (40.1%), followed by the t-test (35.6%). 4. By examining the errors of the statistical methods, there were 49 thesis with errors among 81 thesis using ANOVA, 25 thesis among 72 thesis using t-test, and 18 over 62 thesis using chi-squared test. 4. Conclusions We have found various mistakes or misuses in the applications of statistical methodologies in the articles published in the Journal of Sasang Constitutional Medicine. It is necessary to present the cases of inappropriate statistical methods in order to improve the quality of academic researches. So long as Sasang constitutional medicine uses the statistical methods, researchers should fully examine and be aware of the statistical methods which they wish to use through other research articles, and statistic publications.

초기 데이터 분석 로드맵을 적용한 사례 연구 (The Study on Application of Data Gathering for the site and Statistical analysis process)

  • 최은향;이상복
    • 한국품질경영학회:학술대회논문집
    • /
    • 한국품질경영학회 2010년도 춘계학술대회
    • /
    • pp.226-234
    • /
    • 2010
  • In this thesis, we present process that remove mistake of data before statistical analysis. If field data which is not simple examination about validity of data, we cannot believe analyzed statistics information. As statistical analysis information is produced based on data to be input in statistical analysis process, the data to be input should be free of error. In this paper, we study the application of statistical analysis road map that can enhance application on site by organizing basic theory and approaching on initial data exploratory phase, essential step before conducting statistical analysis. Therefore, access to statistical analysis can be enhanced and reliability on result of analysis can be secured by conducting correct statistical analysis.

  • PDF

OVERVIEWS ON LIMIT CONCEPTS OF A SEQUENCE OF FUZZY NUMBERS I

  • Kwon, Joong-Sung;Shim, Hong-Tae
    • Journal of applied mathematics & informatics
    • /
    • 제29권3_4호
    • /
    • pp.1017-1025
    • /
    • 2011
  • In this paper, we survey various notions and results related to statistical convergence of a sequence of fuzzy numbers, in which statistical convergence for fuzzy numbers was first introduced by Nuray and Savas in 1995. We will go over boundedness, convergence of sequences of fuzzy numbers, statistically convergence and statistically Cauchy sequences of fuzzy numbers, statistical limit and cluster point for sequences of fuzzy numbers, statistical mono-tonicity and boundedness of a sequence of fuzzy numbers and finally statistical limit inferior and limit inferior for the statistically bounded sequences of fuzzy numbers.

The Design and Implementation of Web-based Statistical Consulting System

  • 류재열;이정훈;조민지;김애지
    • 한국데이터정보과학회:학술대회논문집
    • /
    • 한국데이터정보과학회 2006년도 추계 학술발표회 논문집
    • /
    • pp.167-180
    • /
    • 2006
  • The statistical survey and analysis is much restricted to time, space and material. The statistical survey and analysis could hardly resume. The statistical survey and analysis is very important to create various and accurate information. The statistical survey and analysis which is not a expert knowledge have many problems in productivity of information, reliability and etc. In this paper, we study the design and Implementation of web-based statistical survey and analysis consulting system which a client meet easily a statistical expert on the web.

  • PDF

마이크로 컴퓨터에 의한 통계자료분석(統計資料分析)에 관한 연구(硏究) (A study on statistical data analysis by microcomputers)

  • 박성현
    • 품질경영학회지
    • /
    • 제13권1호
    • /
    • pp.12-19
    • /
    • 1985
  • First of all, the necessity of statistical packages, and the strengths and weaknesses of microcomputers for statistical data ana!ysis are examined in this paper. Secondly, some statistical packages available for microcomputers in the international market are introduced, and the contents of two statistical packages developed by the author are presented.

  • PDF

통계적 소양 교육을 위한 그래프 오류 유형 분석: 자료 분석 단계에서의 통계 윤리 문제 (An Analysis on Error Types of Graphs for Statistical Literacy Education: Ethical Problems at Data Analysis in the Statistical Problem Solving)

  • 탁병주;김다빈
    • 한국초등수학교육학회지
    • /
    • 제24권1호
    • /
    • pp.1-30
    • /
    • 2020
  • 본 연구는 통계적 소양 교육을 실천하기 위해 초등학교 통계교육의 주된 내용 요소에 해당하는 그래프 지도 중 특히 오류의 유형화에 주목하였다. 구체적으로 문헌 분석을 통해 통계적 문제해결의 관점에서 그래프의 교수학적 의의와 구성 요소를 확인하였고, 이를 표현하는 과정에서 나타나는 오류를 분류하여 각 사례들을 자료 분석 단계에서의 통계 윤리 문제와 연결하였다. 연구 결과, 그래프 오류 유형은 범주 표현에서의 오류, 빈도 표현에서의 오류, 맥락 제시에서의 오류로 분류할 수 있었고, 이러한 오류로 인해 자료 분석 단계에서 주관적인 분석 방법 채택, 시각적 착시현상 유도, 자료에 대한 정보 왜곡과 같은 통계 윤리 문제가 발생할 수 있음을 확인하였다. 그리고 우리나라 초등학교 수학과 교육과정에서는 오류를 범하지 않도록 정형화된 틀을 제공하고 그 틀에 맞춰 그래프를 그리는 절차에 주목하는 경향이 있었다. 이를 통해 그래프 오류 유형이 초등학교 통계교육에 제공하는 시사점을 통계적 소양 교육, 통계 윤리, 교사 지식의 관점에서 제시하였다.