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How Many Subjects

Author: Mark W. Lipsey
Publisher: SAGE
ISBN: 9780803929494
Size: 64.78 MB
Format: PDF, ePub, Mobi
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How Many Subjects? is a practical guide to sample size calculations and general principles of cost-effective research. It introduces a simple technique of statistical power analysis which allows researchers to compute approximate sample sizes and power for a wide variety of research designs. Because the same technique is used with only slight modifications for different statistical tests, researchers can easily compare the sample sizes required by different designs and tests to make cost-effective decisions in planning a study. These comparisons, emphasized throughout the book, demonstrate important principles of design, measurement and analysis that are rarely discussed in courses or textbooks.

How Many Subjects

Author: Mark W. Lipsey
Publisher: SAGE
ISBN: 9780803929494
Size: 69.21 MB
Format: PDF, ePub
View: 165
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How Many Subjects? is a practical guide to sample size calculations and general principles of cost-effective research. It introduces a simple technique of statistical power analysis which allows researchers to compute approximate sample sizes and power for a wide variety of research designs. Because the same technique is used with only slight modifications for different statistical tests, researchers can easily compare the sample sizes required by different designs and tests to make cost-effective decisions in planning a study. These comparisons, emphasized throughout the book, demonstrate important principles of design, measurement and analysis that are rarely discussed in courses or textbooks.

Physical Activity Assessments For Health Related Research

Author: Greg Welk
Publisher: Human Kinetics
ISBN: 9780736037488
Size: 69.12 MB
Format: PDF, ePub
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And examples -- References -- Construct validity in physical activity research / Matthew T. Mahar and David A. Rowe -- Definitional stage -- Confirmatory stage -- Theory-testing stage -- Summary -- References -- Physical activity data : odd distributions yield strange answers / Jerry R. Thomas and Katherine T. Thomas -- Overview of the general linear model and rank-order procedures -- Determining whether data are normally distributed -- Application of rank-order procedures -- Data distributions and correlation -- Extensions of GLM rank-order statistical procedures -- Summary -- Endnote -- References -- Equating and linking of physical activity questionnaires / Weimo Zhu -- What is scale equating? -- Equating methods -- Practical issues of scale equating -- Remaining challenges and future research directions -- Summary -- References

Statistical Power Analysis

Author: Kevin R. Murphy
Publisher: Routledge
ISBN: 1135625336
Size: 30.66 MB
Format: PDF, Kindle
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This book presents a simple and general method for conducting statistical power analysis based on the widely used F statistic. The book illustrates how these analyses work and how they can be applied to problems of studying design, to evaluate others' research, and to choose the appropriate criterion for defining "statistically significant" outcomes. Statistical Power Analysis examines the four major applications of power analysis, concentrating on how to determine: *the sample size needed to achieve desired levels of power; *the level of power that is needed in a study; *the size of effect that can be reliably detected by a study; and *sensible criteria for statistical significance. Highlights of the second edition include: a CD with an easy-to-use statistical power analysis program; a new chapter on power analysis in multi-factor ANOVA, including repeated-measures designs; and a new One-Stop PV Table to serve as a quick reference guide. The book discusses the application of power analysis to both traditional null hypothesis tests and to minimum-effect testing. It demonstrates how the same basic model applies to both types of testing and explains how some relatively simple procedures allow researchers to ask a series of important questions about their research. Drawing from the behavioral and social sciences, the authors present the material in a nontechnical way so that readers with little expertise in statistical analysis can quickly obtain the values needed to carry out the power analysis. Ideal for students and researchers of statistical and research methodology in the social, behavioral, and health sciences who want to know how to apply methods of power analysis to their research.

Handbook Of Applied Social Research Methods

Author: Professor Leonard Bickman
Publisher: SAGE
ISBN: 9780761906728
Size: 31.14 MB
Format: PDF, Kindle
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The Handbook of Applied Social Research Methods shows how to make intelligent and conscious decisions so that researchers can refine and hone their research questions as new knowledge is gained, unanticipated obstacles are encountered, or contextual shifts take place - all key elements in the iterative nature of applied research. With examples and illustrations from the authors' own experiences, this book gives readers a practical guide to conducting applied research.

Design Sensitivity

Author: Mark W. Lipsey
Publisher: SAGE
ISBN: 9780803930636
Size: 77.24 MB
Format: PDF, Kindle
View: 3846
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All researchers face an important challenge - designing research that will have sufficient sensitivity to detect those effects it purports to investigate. Sample size, validity and sensitivity, experimental error, subject variability, and the type of statistical analysis all influence the sensitivity of a research design. Through careful explanations and selection of examples, Lipsey examines the concept of design sensitivity and explains statistical power and the elements that determine it.

Statistical Power Analysis For The Behavioral Sciences

Author: Jacob Cohen
Publisher: Routledge
ISBN: 1134742703
Size: 69.17 MB
Format: PDF, ePub, Mobi
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Statistical Power Analysis is a nontechnical guide to power analysis in research planning that provides users of applied statistics with the tools they need for more effective analysis. The Second Edition includes: * a chapter covering power analysis in set correlation and multivariate methods; * a chapter considering effect size, psychometric reliability, and the efficacy of "qualifying" dependent variables and; * expanded power and sample size tables for multiple regression/correlation.

Understanding Nursing Research

Author: Nancy Burns
Publisher: Elsevier Health Sciences
ISBN: 1437726550
Size: 30.50 MB
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Learn how to evaluate and apply research with the #1 nursing research book! Understanding Nursing Research: Building an Evidence-Based Practice is known for its authoritative content, a time-tested step-by-step approach, and abundant use of research examples. With improved clarity and readability, the new edition strengthens its focus on evidence-based practice to better demonstrate how the steps of the research process relate to evidence-based nursing. Written by two of the leaders in the field of nursing research, Nancy Burns and Susan K. Grove, this full-color text offers unique insights into understanding, appraising, and applying published research to evidence-based practice. Authoritative content is written by two of the true pioneers in nursing research, who offer unique, first-hand insights into the field. Research examples provide practice in working with published studies, with many of the examples including Critical Appraisal and Implications for Practice sections. A clear, step-by-step organization introduces the research process and demonstrates how this systematic framework relates to evidence-based practice. An expanded emphasis on evidence-based practice helps you develop skills in studying and appraising published research, so you are prepared for your role in working with research evidence. Enhanced coverage of qualitative research allows prepares you to approach research questions and clinical questions with an unbiased view of the researcher's methodology. Two different appraisal processes are included: A traditional in-depth critical appraisal process prepares you for graduate-level work in research. A concise, practice-focused research appraisal process equips you for quick and accurate evaluation of the applicability of research findings to clinical practice. Updated research examples prepare you for evidence-based practice by using the physiologic conditions and hospitalized patients seen in clinicals.

Integrating Research Into Practice

Author: Cynthia Bisman
Publisher: Wadsworth Publishing Company
ISBN: 9780534362157
Size: 33.60 MB
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In this breakthrough book, Cynthia Bisman and David Hardcastle present research methods as tools that social workers can use to improve clients. Rather than describing how research is done, they focus on how social work practitioners can use the rigors and methodologies of research in practice. The authors provide students with the skills they will need to evaluate the relevance and effectiveness of their practice--including the ability to articulate what they are doing, monitor their effectiveness, and decide whether to continue the applications with other clients.

The Essential Guide To Effect Sizes

Author: Paul D. Ellis
Publisher: Cambridge University Press
ISBN: 1139488155
Size: 15.86 MB
Format: PDF, Kindle
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This succinct and jargon-free introduction to effect sizes gives students and researchers the tools they need to interpret the practical significance of their results. Using a class-tested approach that includes numerous examples and step-by-step exercises, it introduces and explains three of the most important issues relating to the practical significance of research results: the reporting and interpretation of effect sizes (Part I), the analysis of statistical power (Part II), and the meta-analytic pooling of effect size estimates drawn from different studies (Part III). The book concludes with a handy list of recommendations for those actively engaged in or currently preparing research projects.