Скачать книгу - Comparing Groups
A hands-on guide to using R to carry out key statistical practices in educational and behavioral sciences research Computing has become an essential part of the day-to-day practice of statistical work, broadening the types of questions that can now be addressed by research scientists applying newly derived data analytic techniques. Comparing Groups: Randomization and Bootstrap Methods Using R emphasizes the direct link between scientific research questions and data analysis. Rather than relying on mathematical calculations, this book focus on conceptual explanations and the use of statistical computing in an effort to guide readers through the integration of design, statistical methodology, and computation to answer specific research questions regarding group differences. Utilizing the widely-used, freely accessible R software, the authors introduce a modern approach to promote methods that provide a more complete understanding of statistical concepts. Following an introduction to R, each chapter is driven by a research question, and empirical data analysis is used to provide answers to that question. These examples are data-driven inquiries that promote interaction between statistical methods and ideas and computer application. Computer code and output are interwoven in the book to illustrate exactly how each analysis is carried out and how output is interpreted. Additional topical coverage includes: Data exploration of one variable and multivariate data Comparing two groups and many groups Permutation tests, randomization tests, and the independent samples t-Test Bootstrap tests and bootstrap intervals Interval estimates and effect sizes Throughout the book, the authors incorporate data from real-world research studies as well aschapter problems that provide a platform to perform data analyses. A related Web site features a complete collection of the book's datasets along with the accompanying codebooks and the R script files and commands, allowing readers to reproduce the presented output and plots. Comparing Groups: Randomization and Bootstrap Methods Using R is an excellent book for upper-undergraduate and graduate level courses on statistical methods, particularlyin the educational and behavioral sciences. The book also serves as a valuable resource for researchers who need a practical guide to modern data analytic and computational methods.


Extraordinary Groups. How Ordinary Teams Achieve Amazing Results Extraordinary Groups. How Ordinary Teams Achieve Amazing Results

Автор: Kathleen Ryan D.

Год издания: 

Two leading experts present a new approach to help teams nurture extraordinary experiences and excel Occasionally we participate in a group that inspires us to describe the experience as «powerful» or simply «wow.» Why are some teams described in such exceptional terms, while most are not? Bellman and Ryan argue that an extraordinary group emerges when a group experience satisfies two or more core needs that members intuitively bring to any group they join. Based on extensive research, the book presents the Group Needs Model to help anyone nurture extraordinary experiences in their groups and achieve outstanding results. Introduces a new approach for creating extraordinary experiences and results in teams Identifies the key characteristics that define exceptional teams Describes the Group Needs Model for encouraging extraordinary experiences and team success A timely resource for anyone who leads groups including HR and OD professionals, managers, executives, nonprofit managers and directors, virtual teams leaders, and trainers


Beyond Listening. Learning the Secret Language of Focus Groups Beyond Listening. Learning the Secret Language of Focus Groups

Автор: Bonnie Goebert

Год издания: 

A groundbreaking guide to making one of marketing's most important resources more effective When kids in a Nabisco focus group told researchers that they always separated their Oreos before they ate them, the researchers recommended that the company develop a cookie that couldn't be taken apart. Fortunately, in this case, Nabisco didn't heed the researchers' advice. Each year, companies spend a billion dollars on focus groups designed to ferret out consumer motivation, and, according to expert Bonnie Goebert, in many cases they're throwing their money away. In this fascinating book, Goebert, a highly respected moderator with three decades of experience with focus groups, explains what's wrong with how companies use the information. More importantly, she draws on her own experiences with clients like the New York Times, Tropicana, Maxwell House, Colgate, Maybelline, Lipton, Federal Express, and scores of other prestigious accounts to provide simple clear-cut guidelines on how companies of just about any size can use focus groups to capture the hearts and minds of consumers. Bonnie Goebert (Southampton, NY) heads her own focus group consulting firm.


Comparing Clinical Measurement Methods. A Practical Guide Comparing Clinical Measurement Methods. A Practical Guide

Автор: Bendix Carstensen

Год издания: 

This book provides a practical guide to analysis of simple and complex method comparison data, using Stata, SAS and R. It takes the classical Limits of Agreement as a starting point, and presents it in a proper statistical framework. The model serves as a reference for reporting sources of variation and for providing conversion equations and plots between methods for practical use, including prediction uncertainty. Presents a modeling framework for analysis of data and reporting of results from comparing measurements from different clinical centers and/or different methods. Provides the practical tools for analyzing method comparison studies along with guidance on what to report and how to plan comparison studies and advice on appropriate software. Illustrated throughout with computer examples in R. Supported by a supplementary website hosting an R-package that performs the major part of the analyses needed in the area. Examples in SAS and Stata for the most common situations are also provided. Written by an acknowledged expert on the subject, with a long standing experience as a biostatistician in a clinical environment and a track record of delivering training on the subject. Biostatisticians, clinicians, medical researchers and practitioners involved in research and analysis of measurement methods and laboratory investigations will benefit from this book. Students of statistics, biostatistics, and the chemical sciences will also find this book useful.


The Handbook for Working with Difficult Groups. How They Are Difficult, Why They Are Difficult and What You Can Do About It The Handbook for Working with Difficult Groups. How They Are Difficult, Why They Are Difficult and What You Can Do About It

Автор: Sandy Schuman

Год издания: 

WE'VE ALL EXPERIENCED the challenges associated with working with groups, but The Handbook for Working with Difficult Groups turns the idea of «difficult groups» on its head. Rather than view groups as inherently difficult, it looks at the factors that make working with groups difficult. Individual chapters focus on challenges such as involving dissenters, building external perspectives, reducing complaining, adapting to cultural differences, incorporating diversity, facilitating inclusion, working virtually, resolving identity-based conflict, transforming unproductive behavior patterns, preventing workplace harassment, and strengthening accountability. The book first provides a framework for thinking systemically about the many and varied ways in which working with a group can be difficult. Building on that framework, the contributors each address three basic issues: How the group is difficult—a description of a real group and the observable phenomena that reflect the group's difficulty. Why the group is difficult—an exploration of the underlying causes of the difficulty. What you can do about it—what you can do as a group facilitator, leader, or member to help the group.


Reflections on Groups and Organizations. On the Couch With Manfred Kets de Vries Reflections on Groups and Organizations. On the Couch With Manfred Kets de Vries

Автор: Manfred F. R. Kets de Vries

Год издания: 

Reflections on Groups and Organizations is the third and final book in the On the Couch with Manfred Kets de Vries series. Broadening the Kets De Vries canvas, this book examines concepts of organizational health, performance, and change. Material ranges from studies of high performance teams – based on time the author spent with the pygmies of central Africa – to the study of organizational stars, to the use of coaching interventions to improve personal and organizational functioning. Kets de Vries looks at the interpersonal and group processes that determine how organizations work within specific contexts, including family firms. He studies dysfunctional leader-follower relationships, downsizing, and organizational transformation. Kets de Vries also introduces his concept of the «authentizotic» organization – a pleasant, healthy, well-functioning workplace.