Confidence Intervals

Author: Michael Smithson
Publisher: SAGE
ISBN: 9780761924999
Format: PDF, ePub, Mobi
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Using lots of easy to understand examples from different disciplines, the author introduces the basis of the confidence interval framework and provides the criteria for `best′ confidence intervals, along with the trade-offs between confidence and precision. The book covers such pertinent topics as: the transformation principle whereby a confidence interval for a parameter may be used to construct an interval for any monotonic transformation of that parameter; confidence intervals on distributions whose shape changes with the value of the parameter being estimated; and, the relationship between confidence interval and significance testing frameworks, particularly regarding power.

Themenbereich B Methodologie und Methoden Evaluation Grundlagen und statistische Methoden der Evaluationsforschung

Author: Heinz Holling
Publisher: Hogrefe Verlag
ISBN: 3840915058
Format: PDF, Kindle
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In nahezu allen gesellschaftlichen Bereichen, wie z.B. Bildung, Verwaltung, Wirtschaft oder Gesundheit, werden heutzutage unterschiedlichste Aktivitäten evaluiert. Somit spielt die Evaluationsforschung nicht nur in der Psychologie, sondern auch in den Nachbarwissenschaften, wie der Pädagogik, Politologie oder Ökonomie, eine bedeutende Rolle. Die Beiträge dieses Enzyklopädiebandes konzentrieren sich auf die wissenschaftlichen Grundlagen der Evaluationsforschung. Im Vordergrund stehen die Definition der Evaluationsforschung und die wissenschaftstheoretische Fundierung dieses Gebietes sowie statistische und methodische Grundlagen. Da Evaluationsstudien häufig komplexer und längerfristiger Natur sind, erfordern sie insbesondere multivariate statistische Auswertungsverfahren. Ihnen wird daher besonders viel Raum gewährt. In einzelnen Kapiteln werden u. a. folgende Themen behandelt: Facettentheorie, Aufstellen und Prüfen von Hypothesen. Generalisierbarkeitstheorie, Metaanalyse in der Evaluationsforschung, das Allgemeine Lineare Modell in der Evaluationsforschung, Hierarchische Lineare Modelle (HLM), Generalisierte Lineare Modelle, Strukturgleichungsmodelle, Multidimensionale Skalierung, Mischverteilungsmodelle, Veränderungsmessung, Zeitreihenanalyse, Resampling sowie statistische Methoden bei unvollständigen Daten.

The SAGE Encyclopedia of Social Science Research Methods

Author: Michael Lewis-Beck
Publisher: SAGE
ISBN: 9780761923633
Format: PDF, Docs
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"The first encyclopedia to cover inclusively both quantitative and qualitative research approaches, this set provides clear explanations of 1,000 methodologies, avoiding mathematical equations when possible with liberal cross-referencing and bibliographies. Each volume includes a list of works cited, and the third contains a comprehensive index and lists of person names, organizations, books, tests, software, major concepts, surveys, and methodologies."--"Reference that rocks," American Libraries, May 2005.

Modern Methods for Robust Regression

Author: Robert Andersen
Publisher: SAGE
ISBN: 1412940729
Format: PDF, ePub
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Geared towards both future and practising social scientists, this book takes an applied approach and offers readers empirical examples to illustrate key concepts. It includes: applied coverage of a topic that has traditionally been discussed from a theoretical standpoint; empirical examples to illustrate key concepts; a web appendix that provides readers with the data and the R-code for the examples used in the book.

Fuzzy Set Theory

Author: Michael Smithson
Publisher: SAGE
ISBN: 9780761929864
Format: PDF, ePub, Mobi
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Fuzzy set theory deals with sets or categories whose boundaries are blurry or, in other words, "fuzzy." This book presents an accessible introduction to fuzzy set theory, focusing on its applicability to the social sciences. Unlike most books on this topic, Fuzzy Set Theory: Applications in the Social Sciences provides a systematic, yet practical guide for researchers wishing to combine fuzzy set theory with standard statistical techniques and model-testing.

Bootstrapping

Author: Christopher Z. Mooney
Publisher: SAGE
ISBN: 9780803953819
Format: PDF, ePub, Mobi
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Bootstrapping, a computational nonparametric technique for "re-sampling," enables researchers to draw a conclusion about the characteristics of a population strictly from the existing sample rather than by making parametric assumptions about the estimator. Using real data examples from per capita personal income to median preference differences between legislative committee members and the entire legislature, Mooney and Duval discuss how to apply bootstrapping when the underlying sampling distribution of the statistics cannot be assumed normal, as well as when the sampling distribution has no analytic solution. In addition, they show the advantages and limitations of four bootstrap confidence interval methods: normal approximation, percenti

Internet Data Collection

Author: Samuel J. Best
Publisher: SAGE
ISBN: 9780761927105
Format: PDF, Mobi
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Designed for researchers and students alike, the volume describes how to perform each stage of the data collection process on the Internet, including sampling, instrument design, and administration. Through the use of non-technical prose and illustrations, it details the options available, describes potential dangers in choosing them, and provides guidelines for sidestepping them. In doing so, though, it does not simply reiterate the practices of traditional communication modes, but approaches the Internet as a unique medium that necessitates its own conventions.

Applied Statistics From Bivariate Through Multivariate Techniques

Author: Rebecca M. Warner
Publisher: SAGE
ISBN: 141299134X
Format: PDF, ePub, Docs
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Rebecca M. Warner's Applied Statistics: From Bivariate Through Multivariate Techniques, Second Edition provides a clear introduction to widely used topics in bivariate and multivariate statistics, including multiple regression, discriminant analysis, MANOVA, factor analysis, and binary logistic regression. The approach is applied and does not require formal mathematics; equations are accompanied by verbal explanations. Students are asked to think about the meaning of equations. Each chapter presents a complete empirical research example to illustrate the application of a specific method. Although SPSS examples are used throughout the book, the conceptual material will be helpful for users of different programs. Each chapter has a glossary and comprehension questions.

Medical Statistics at a Glance

Author: Aviva Petrie
Publisher: John Wiley & Sons
ISBN: 1118782445
Format: PDF, ePub, Mobi
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Medical Statistics at a Glance is a concise and accessible introduction and revision aid for this complex subject. The self-contained chapters explain the underlying concepts of medical statistics and provide a guide to the most commonly used statistical procedures. This new edition of Medical Statistics at a Glance: Presents key facts accompanied by clear and informative tables and diagrams Focuses on illustrative examples which show statistics in action, with an emphasis on the interpretation of computer data analysis rather than complex hand calculations Includes extensive cross-referencing, a comprehensive glossary of terms and flow-charts to make it easier to choose appropriate tests Now provides the learning objectives for each chapter Includes a new chapter on Developing Prognostic Scores Includes new or expanded material on study management, multi-centre studies, sequential trials, bias and different methods to remove confounding in observational studies, multiple comparisons, ROC curves and checking assumptions in a logistic regression analysis The companion website at www.medstatsaag.com contains supplementary material including an extensive reference list and multiple choice questions (MCQs) with interactive answers for self-assessment. Medical Statistics at a Glance will appeal to all medical students, junior doctors and researchers in biomedical and pharmaceutical disciplines. Reviews of the previous editions "The more familiar I have become with this book, the more I appreciate the clear presentation and unthreatening prose. It is now a valuable companion to my formal statistics course." –International Journal of Epidemiology "I heartily recommend it, especially to first years, but it's equally appropriate for an intercalated BSc or Postgraduate research. If statistics give you headaches - buy it. If statistics are all you think about - buy it." –GKT Gazette "...I unreservedly recommend this book to all medical students, especially those that dislike reading reams of text. This is one book that will not sit on your shelf collecting dust once you have graduated and will also function as a reference book." –4th Year Medical Student, Barts and the London Chronicle, Spring 2003