This book presents the human side of statistical consulting and illustrates the problems and opportunities that can arise for the modern consultant. Statistical problems occur in almost all areas of science, in medicine, in industry, in marketing, and in finance, and a wide range of interests is catered for by the twelve contributions to this unique volume. These contributions demonstrate that statistical consultancy provides a broad spectrum of intellectually stimulating problems, as well as being a vital tool in many aspects of modern life. The book will be valuable to university and college students of statistics and to all those who use statistical techniques in a consultancy environment of any kind.

Cluster analysis comprises a range of methods for classifying multivariate data into subgroups. By organizing multivariate data into such subgroups, clustering can help reveal the characteristics of any structure or patterns present. These techniques have proven useful in a wide range of areas such as medicine, psychology, market research and bioinformatics.

This fifth edition of the highly successful "Cluster Analysis" includes coverage of the latest developments in the field and a new chapter dealing with finite mixture models for structured data.
Real life examples are used throughout to demonstrate the application of the theory, and figures are used extensively to illustrate graphical techniques. The book is comprehensive yet relatively non-mathematical, focusing on the practical aspects of cluster analysis.

Key Features:

- Presents a comprehensive guide to clustering techniques, with focus on the practical aspects of cluster analysis.
- Provides a thorough revision of the fourth edition, including new developments in clustering longitudinal data and examples from bioinformatics and gene studies
- Updates the chapter on mixture models to include recent developments and presents a new chapter on mixture modeling for structured data.

Practitioners and researchers working in cluster analysis and data analysis will benefit from this book.

If you work with data and need easy access to clear, reliable definitions and explanations of modern statistical and statistics-related concepts, then look no further than this dictionary. Nearly 4000 terms are defined, covering medical, survey, theoretical, and applied statistics, including computational and graphical aspects. Entries are provided for standard and specialized statistical software. In addition, short biographies of over 100 important statisticians are given. Definitions provide enough mathematical detail to clarify concepts and give standard formulae when these are helpful. The majority of definitions then give a reference to a book or article where the user can seek further or more specialized information, and many are accompanied by graphical material to aid understanding.

This book presents the human side of statistical consulting and illustrates the problems and opportunities that can arise for the modern consultant. Statistical problems occur in almost all areas of science, in medicine, in industry, in marketing, and in finance, and a wide range of interests is catered for by the twelve contributions to this unique volume. These contributions demonstrate that statistical consultancy provides a broad spectrum of intellectually stimulating problems, as well as being a vital tool in many aspects of modern life. The book will be valuable to university and college students of statistics and to all those who use statistical techniques in a consultancy environment of any kind.

From 'Abcissa' to 'Zygosity determination' - this accessible introduction to the terminology of medical statistics describes more than 1500 terms all clearly explained, illustrated and defined in non-technical language, without any mathematical formulae! With the majority of terms revised and updated and the addition of more than 100 brand new definitions, this new edition will enable medical students to quickly grasp the meaning of any of the statistical terms they encounter when reading the medical literature. Furthermore, annotated comments are used judiciously to warn the unwary of some of the common pitfalls that accompany some cherished biomedical statistical techniques. Wherever possible, the definitions are supplemented with a reference to further reading where the reader may gain a deeper insight, so whilst the definitions are easily disgestible, they also provide a stepping stone to a more sophisticated comprehension. Statistical terminology can be quite bewildering for clinicians: this guide will be a lifesaver.

At last - a new edition of the highly claimed book "Clinical Trials in Psychiatry"

This book provides a concise but thorough overview of clinical trials in psychiatry, invaluable to those seeking solutions to numerous problems relating to design, methodology and analysis of such trials. Practical examples and applications are used to ground theory whenever possible. The Second Edition includes new information regarding: Recent important psychiatric trials More specific discussion of psychiatry in the USA and the particular problems of trials in the USA, including comments about the FDA (U.S. Food and Drug Administration) An extended chapter on meta-analysis Further discussion of sub-group analysis

Special features include appendices outlining how to design and report clinical trials, what websites and software programs are appropriate and an extensive reference section.

From the reviews of the First Edition:

""Everitt & Wessely are to be congratulated on producing an excellent guide to help overcome the snags in clinical trial research. Clearly written and in an engrossing style, the book is likely to become a classic textbook on clinical trials, and not just in psychiatry. The authors' enthusiasm and grasp of clinical trial research make for a gripping and insightful read...it is one of the very best books that has been written on clinical trials."" THE BRITISH JOURNAL OF PSYCHIATRY

""The experience of both authors in this area gives the book a very pragmatic approach grounded in reality, with theoretical overviews invariably being followed by practical examples and applications... an invaluable companion to anyone involved in, or contemplating undertaking, clinicaltrials research."" PSYCHOLOGICAL MEDICINE

Statistical methodology is of great importance to medical research and clinical practice. The Encyclopaedic Companion to Medical Statistics contains readable accounts of the key topics central to current research and practice. Each entry has been written by an individual chosen for both their expertise in the field and their ability to communicate statistical concepts successfully to medical researchers. Real examples from the biomedical literature and relevant illustrations feature in many entries and extensive cross-referencing signposts the reader to related entries. Key Features: * Contains accounts of over 400 statistical topics central to current medical research. *80% of first edition entries updated and revised. * Presents the latest techniques used at the cutting edge of medical research. * Covers common errors in statistical analyses in medicine. * Real examples from the biomedical literature and relevant illustrations feature throughout. * Contains contributions from over 70 experts in the field. Medical researchers, researchers and practitioners in medical research and statistics will benefit greatly from this book.

Finite mixture distributions arise in a variety of applications ranging from the length distribution of fish to the content of DNA in the nuclei of liver cells. The literature surrounding them is large and goes back to the end of the last century when Karl Pearson published his well-known paper on estimating the five parameters in a mixture of two normal distributions. In this text we attempt to review this literature and in addition indicate the practical details of fitting such distributions to sample data. Our hope is that the monograph will be useful to statisticians interested in mixture distributions and to re search workers in other areas applying such distributions to their data. We would like to express our gratitude to Mrs Bertha Lakey for typing the manuscript. Institute oj Psychiatry B. S. Everitt University of London D. l Hand 1980 CHAPTER I General introduction 1. 1 Introduction This monograph is concerned with statistical distributions which can be expressed as superpositions of (usually simpler) component distributions. Such superpositions are termed mixture distributions or compound distributions. For example, the distribution of height in a population of children might be expressed as follows: h(height) = fg(height: age)f(age)d age (1. 1) where g(height: age) is the conditional distribution of height on age, and/(age) is the age distribution of the children in the population."

Optimization techniques are used to find the values of a set of parameters which maximize or minimize some objective function of interest. Such methods have become of great importance in statistics for estimation, model fitting, etc. This text attempts to give a brief introduction to optimization methods and their use in several important areas of statistics. It does not pretend to provide either a complete treatment of optimization techniques or a comprehensive review of their application in statistics; such a review would, of course, require a volume several orders of magnitude larger than this since almost every issue of every statistics journal contains one or other paper which involves the application of an optimization method. It is hoped that the text will be useful to students on applied statistics courses and to researchers needing to use optimization techniques in a statistical context. Lastly, my thanks are due to Bertha Lakey for typing the manuscript.

The "Encyclopedia of Statistics in Behavioral Science" encompasses the refined statistical concepts and techniques that are essential to the advancement in psychology and its ever-widening fields of application. Providing comprehensive accounts drawn from the huge expansion of statistical methodologies in the behavioral sciences, highlighting new techniques and developments from the past decade. Up-to-date coverage of developing fields including neuroscience, behavioral genetics, decision learning and cognitive science. Containing over 600 articles and over 400 contributions from eminent psychologists and statisticians world-wide. Emphasis on practical, non-technical methods with wide ranging application. Extensively cross-referenced to ensure fast and accurate access to available information

Representing an invaluable addition to both the psychological and statistical literature, the "Encyclopedia of Statistics in Behavioral Science" forms an essential reference work for researchers, educators and students in the fields of applied psychology, sociology, market research, consumer behavior, management science, decision making and human resource management.

For further details please visit: www.wiley.com/go/eosbs