Statistical Power Analysis for the Behavioral Sciences

Download Statistical Power Analysis for the Behavioral Sciences PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1134742770
Total Pages : 625 pages
Book Rating : 4.1/5 (347 download)

DOWNLOAD NOW!


Book Synopsis Statistical Power Analysis for the Behavioral Sciences by : Jacob Cohen

Download or read book Statistical Power Analysis for the Behavioral Sciences written by Jacob Cohen and published by Routledge. This book was released on 2013-05-13 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Applied Power Analysis for the Behavioral Sciences

Download Applied Power Analysis for the Behavioral Sciences PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1135280371
Total Pages : 272 pages
Book Rating : 4.1/5 (352 download)

DOWNLOAD NOW!


Book Synopsis Applied Power Analysis for the Behavioral Sciences by : Christopher L. Aberson

Download or read book Applied Power Analysis for the Behavioral Sciences written by Christopher L. Aberson and published by Routledge. This book was released on 2011-01-19 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical guide on conducting power analyses using IBM SPSS was written for students and researchers with limited quantitative backgrounds. Readers will appreciate the coverage of topics that are not well described in competing books such as estimating effect sizes, power analyses for complex designs, detailed coverage of popular multiple regression and multi-factor ANOVA approaches, and power for multiple comparisons and simple effects. Practical issues such as how to increase power without increasing sample size, how to report findings, how to derive effect size expectations, and how to support null hypotheses, are also addressed. Unlike other texts, this book focuses on the statistical and methodological aspects of the analyses. Performing analyses using software applications rather than via complex hand calculations is demonstrated throughout. Ready-to-use IBM SPSS syntax for conducting analyses are included to perform calculations and power analyses at http://www.psypress.com/applied-power-analysis . Detailed annotations for each syntax protocol review the minor modifications necessary for researchers to adapt the syntax to their own analyses. As such, the text reviews both power analysis techniques and provides tools for conducting analyses. Numerous examples enhance accessibility by demonstrating specific issues that must be addressed at all stages of the power analysis and providing detailed interpretations of IBM SPSS output. Several examples address techniques for estimation of power and hand calculations as well. Chapter summaries and key statistics sections also aid in understanding the material. Chapter 1 reviews significance testing and introduces power. Chapters 2 through 9 cover power analysis strategies for a variety of common designs. Precision analysis for confidence intervals around mean difference, correlations, and effect sizes is the focus of chapter 10. The book concludes with a review of how to report power analyses, a review of freeware and commercial software for power analyses, and how to increase power without increasing sample size. Chapters focusing on simpler analyses such as t-tests present detailed formulae and calculation examples. Chapters focusing on more complex topics such as mixed model ANOVA/MANOVA present primarily computer-based analyses. Intended as a supplementary text for graduate-level research methods, experimental design, quasi-experimental methods, psychometrics, statistics, and/or advanced/multivariate statistics taught in the behavioral, social, biological, and medical sciences, researchers in these fields also appreciate this book’s practical emphasis. A prerequisite of introductory statistics is recommended.

Statistical Power Analysis for the Social and Behavioral Sciences

Download Statistical Power Analysis for the Social and Behavioral Sciences PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1136464182
Total Pages : 285 pages
Book Rating : 4.1/5 (364 download)

DOWNLOAD NOW!


Book Synopsis Statistical Power Analysis for the Social and Behavioral Sciences by : Xiaofeng Steven Liu

Download or read book Statistical Power Analysis for the Social and Behavioral Sciences written by Xiaofeng Steven Liu and published by Routledge. This book was released on 2013-11-07 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to demonstrate the application of power analysis to the newer more advanced statistical techniques that are increasingly used in the social and behavioral sciences. Both basic and advanced designs are covered. Readers are shown how to apply power analysis to techniques such as hierarchical linear modeling, meta-analysis, and structural equation modeling. Each chapter opens with a review of the statistical procedure and then proceeds to derive the power functions. This is followed by examples that demonstrate how to produce power tables and charts. The book clearly shows how to calculate power by providing open code for every design and procedure in R, SAS, and SPSS. Readers can verify the power computation using the computer programs on the book's website. There is a growing requirement to include power analysis to justify sample sizes in grant proposals. Most chapters are self-standing and can be read in any order without much disruption.This book will help readers do just that. Sample computer code in R, SPSS, and SAS at www.routledge.com/9781848729810 are written to tabulate power values and produce power curves that can be included in a grant proposal. Organized according to various techniques, chapters 1 – 3 introduce the basics of statistical power and sample size issues including the historical origin, hypothesis testing, and the use of statistical power in t tests and confidence intervals. Chapters 4 - 6 cover common statistical procedures -- analysis of variance, linear regression (both simple regression and multiple regression), correlation, analysis of covariance, and multivariate analysis. Chapters 7 - 11 review the new statistical procedures -- multi-level models, meta-analysis, structural equation models, and longitudinal studies. The appendixes contain a tutorial about R and show the statistical theory of power analysis. Intended as a supplement for graduate courses on quantitative methods, multivariate statistics, hierarchical linear modeling (HLM) and/or multilevel modeling and SEM taught in psychology, education, human development, nursing, and social and life sciences, this is the first text on statistical power for advanced procedures. Researchers and practitioners in these fields also appreciate the book‘s unique coverage of the use of statistical power analysis to determine sample size in planning a study. A prerequisite of basic through multivariate statistics is assumed.

Applied Power Analysis for the Behavioral Sciences

Download Applied Power Analysis for the Behavioral Sciences PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1351695061
Total Pages : 194 pages
Book Rating : 4.3/5 (516 download)

DOWNLOAD NOW!


Book Synopsis Applied Power Analysis for the Behavioral Sciences by : Christopher L. Aberson

Download or read book Applied Power Analysis for the Behavioral Sciences written by Christopher L. Aberson and published by Routledge. This book was released on 2019-01-24 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applied Power Analysis for the Behavioral Sciences is a practical "how-to" guide to conducting statistical power analyses for psychology and related fields. The book provides a guide to conducting analyses that is appropriate for researchers and students, including those with limited quantitative backgrounds. With practical use in mind, the text provides detailed coverage of topics such as how to estimate expected effect sizes and power analyses for complex designs. The topical coverage of the text, an applied approach, in-depth coverage of popular statistical procedures, and a focus on conducting analyses using R make the text a unique contribution to the power literature. To facilitate application and usability, the text includes ready-to-use R code developed for the text. An accompanying R package called pwr2ppl (available at https://github.com/chrisaberson/pwr2ppl) provides tools for conducting power analyses across each topic covered in the text.

How Many Subjects?

Download How Many Subjects? PDF Online Free

Author :
Publisher : SAGE
ISBN 13 : 9780803929494
Total Pages : 128 pages
Book Rating : 4.9/5 (294 download)

DOWNLOAD NOW!


Book Synopsis How Many Subjects? by : Helena Chmura Kraemer

Download or read book How Many Subjects? written by Helena Chmura Kraemer and published by SAGE. This book was released on 1987-09 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

The Essential Guide to Effect Sizes

Download The Essential Guide to Effect Sizes PDF Online Free

Author :
Publisher : Cambridge University Press
ISBN 13 : 0521142466
Total Pages : 193 pages
Book Rating : 4.5/5 (211 download)

DOWNLOAD NOW!


Book Synopsis The Essential Guide to Effect Sizes by : Paul D. Ellis

Download or read book The Essential Guide to Effect Sizes written by Paul D. Ellis and published by Cambridge University Press. This book was released on 2010-07 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: A jargon-free introduction for students and researchers looking to interpret the practical significance of their results.

Fundamental Statistics for the Social and Behavioral Sciences

Download Fundamental Statistics for the Social and Behavioral Sciences PDF Online Free

Author :
Publisher : SAGE Publications
ISBN 13 : 1506377467
Total Pages : 740 pages
Book Rating : 4.5/5 (63 download)

DOWNLOAD NOW!


Book Synopsis Fundamental Statistics for the Social and Behavioral Sciences by : Howard T. Tokunaga

Download or read book Fundamental Statistics for the Social and Behavioral Sciences written by Howard T. Tokunaga and published by SAGE Publications. This book was released on 2018-09-12 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental Statistics for the Social and Behavioral Sciences, Second Edition, places statistics within the research process, illustrating how they are used to answer questions and test ideas. Students learn not only how to calculate statistics, but also how to interpret and communicate the results of statistical analyses in light of a study’s research hypothesis. Featuring accessible writing and well-integrated research examples, the book gives students a greater understanding of how research studies are conceived, conducted, and communicated. The Second Edition includes a new chapter on regression; covers how collected data can be organized, presented and summarized; the process of conducting statistical analyses to test research questions, hypotheses, and issues/controversies; and examines statistical procedures used in research situations that vary in the number of independent variables in the study. Every chapter includes learning checks, such as review questions and summary boxes, to reinforce the content students just learned, and exercises at the end of every chapter help assess their knowledge. Also new to the Second Edition -- animated video tutorials!

Applied Power Analysis for the Behavioral Sciences

Download Applied Power Analysis for the Behavioral Sciences PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1135280363
Total Pages : 458 pages
Book Rating : 4.1/5 (352 download)

DOWNLOAD NOW!


Book Synopsis Applied Power Analysis for the Behavioral Sciences by : Christopher L. Aberson

Download or read book Applied Power Analysis for the Behavioral Sciences written by Christopher L. Aberson and published by Routledge. This book was released on 2011-01-19 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical guide on conducting power analyses using IBM SPSS was written for students and researchers with limited quantitative backgrounds. Readers will appreciate the coverage of topics that are not well described in competing books such as estimating effect sizes, power analyses for complex designs, detailed coverage of popular multiple regression and multi-factor ANOVA approaches, and power for multiple comparisons and simple effects. Practical issues such as how to increase power without increasing sample size, how to report findings, how to derive effect size expectations, and how to support null hypotheses, are also addressed. Unlike other texts, this book focuses on the statistical and methodological aspects of the analyses. Performing analyses using software applications rather than via complex hand calculations is demonstrated throughout. Ready-to-use IBM SPSS syntax for conducting analyses are included to perform calculations and power analyses at http://www.psypress.com/applied-power-analysis . Detailed annotations for each syntax protocol review the minor modifications necessary for researchers to adapt the syntax to their own analyses. As such, the text reviews both power analysis techniques and provides tools for conducting analyses. Numerous examples enhance accessibility by demonstrating specific issues that must be addressed at all stages of the power analysis and providing detailed interpretations of IBM SPSS output. Several examples address techniques for estimation of power and hand calculations as well. Chapter summaries and key statistics sections also aid in understanding the material. Chapter 1 reviews significance testing and introduces power. Chapters 2 through 9 cover power analysis strategies for a variety of common designs. Precision analysis for confidence intervals around mean difference, correlations, and effect sizes is the focus of chapter 10. The book concludes with a review of how to report power analyses, a review of freeware and commercial software for power analyses, and how to increase power without increasing sample size. Chapters focusing on simpler analyses such as t-tests present detailed formulae and calculation examples. Chapters focusing on more complex topics such as mixed model ANOVA/MANOVA present primarily computer-based analyses. Intended as a supplementary text for graduate-level research methods, experimental design, quasi-experimental methods, psychometrics, statistics, and/or advanced/multivariate statistics taught in the behavioral, social, biological, and medical sciences, researchers in these fields also appreciate this book’s practical emphasis. A prerequisite of introductory statistics is recommended.

Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences

Download Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences PDF Online Free

Author :
Publisher : Psychology Press
ISBN 13 : 1135468249
Total Pages : 572 pages
Book Rating : 4.1/5 (354 download)

DOWNLOAD NOW!


Book Synopsis Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences by : Patricia Cohen

Download or read book Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences written by Patricia Cohen and published by Psychology Press. This book was released on 2014-04-04 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: This classic text on multiple regression is noted for its nonmathematical, applied, and data-analytic approach. Readers profit from its verbal-conceptual exposition and frequent use of examples. The applied emphasis provides clear illustrations of the principles and provides worked examples of the types of applications that are possible. Researchers learn how to specify regression models that directly address their research questions. An overview of the fundamental ideas of multiple regression and a review of bivariate correlation and regression and other elementary statistical concepts provide a strong foundation for understanding the rest of the text. The third edition features an increased emphasis on graphics and the use of confidence intervals and effect size measures, and an accompanying CD with data for most of the numerical examples along with the computer code for SPSS, SAS, and SYSTAT. Applied Multiple Regression serves as both a textbook for graduate students and as a reference tool for researchers in psychology, education, health sciences, communications, business, sociology, political science, anthropology, and economics. An introductory knowledge of statistics is required. Self-standing chapters minimize the need for researchers to refer to previous chapters.

Statistics for the Behavioral Sciences

Download Statistics for the Behavioral Sciences PDF Online Free

Author :
Publisher : SAGE
ISBN 13 : 141296931X
Total Pages : 737 pages
Book Rating : 4.4/5 (129 download)

DOWNLOAD NOW!


Book Synopsis Statistics for the Behavioral Sciences by : Gregory J. Privitera

Download or read book Statistics for the Behavioral Sciences written by Gregory J. Privitera and published by SAGE. This book was released on 2011-09-07 with total page 737 pages. Available in PDF, EPUB and Kindle. Book excerpt: Statistics for the Behavioral Sciences is an introduction to statistics text that will engage students in an ongoing spirit of discovery by illustrating how statistics apply to modern-day research problems. By integrating instructions, screenshots, and practical examples for using IBM SPSS® Statistics software, the book makes it easy for students to learn statistical concepts within each chapter. Gregory J. Privitera takes a user-friendly approach while balancing statistical theory, computation, and application with the technical instruction needed for students to succeed in the modern era of data collection, analysis, and statistical interpretation.

Multivariable Modeling and Multivariate Analysis for the Behavioral Sciences

Download Multivariable Modeling and Multivariate Analysis for the Behavioral Sciences PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 1439807701
Total Pages : 324 pages
Book Rating : 4.4/5 (398 download)

DOWNLOAD NOW!


Book Synopsis Multivariable Modeling and Multivariate Analysis for the Behavioral Sciences by : Brian S. Everitt

Download or read book Multivariable Modeling and Multivariate Analysis for the Behavioral Sciences written by Brian S. Everitt and published by CRC Press. This book was released on 2009-09-28 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multivariable Modeling and Multivariate Analysis for the Behavioral Sciences shows students how to apply statistical methods to behavioral science data in a sensible manner. Assuming some familiarity with introductory statistics, the book analyzes a host of real-world data to provide useful answers to real-life issues.The author begins by exploring

Essential Statistics for the Behavioral Sciences

Download Essential Statistics for the Behavioral Sciences PDF Online Free

Author :
Publisher : SAGE Publications
ISBN 13 : 1506386288
Total Pages : 615 pages
Book Rating : 4.5/5 (63 download)

DOWNLOAD NOW!


Book Synopsis Essential Statistics for the Behavioral Sciences by : Gregory J. Privitera

Download or read book Essential Statistics for the Behavioral Sciences written by Gregory J. Privitera and published by SAGE Publications. This book was released on 2017-12-15 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essentials of Statistics for the Behavioral Sciences is a concise version of Statistics for the Behavioral Sciences by award-winning teacher, author, and advisor Gregory J. Privitera. The Second Edition provides balanced coverage for today’s students, connecting the relevance of core concepts to daily life with new introductory vignettes for every chapter, while speaking to the reader as a researcher when covering statistical theory, computation, and application. Robust pedagogy allows students to continually check their comprehension and hone their skills while working through carefully developed problems and exercises that include current research and seamless integration of IBM® SPSS® Statistics. Readers will welcome Privitera’s thoughtful instruction, conversational voice, and application of statistics to real-world problems. A Complete Teaching & Learning Package . SAGE coursepacks FREE! SAGE coursepacks makes it easy to import our quality instructor and student resource content into your school’s learning management system (LMS). Intuitive and simple to use, SAGE coursepacks allows you to customize course content to meet your students’ needs. . SAGE edge FREE! SAGE edge offers both instructors and students a robust online environment with an impressive array of teaching and learning resources. Study Guide With IBM® SPSS® Workbook Bundle the Second Edition with the accompanying Student Study Guide With IBM® SPSS® Workbook for Essential Statistics for the Behavioral Sciences. Guide for Users of R, SAS®, and Stata® Bundle the Second Edition with the accompanying Essentials of Statistical Analysis "In Focus". WebAssign® This title is available on WebAssign, allowing instructors to produce and manage assignments with their students online using a grade book that allows them to track and monitor students′ progress. Students receive unlimited practice using a combination of multiple choice and algorithmic questions, and are allowed unlimited access to this edition of the textbook in the same course at no additional cost. WebAssign provides instant feedback and links directly to the accompanying eBook section where the concept was covered, allowing students to find the correct solution.

Practical Statistical Power Analysis

Download Practical Statistical Power Analysis PDF Online Free

Author :
Publisher : Isdsa Press
ISBN 13 : 9781946728029
Total Pages : 358 pages
Book Rating : 4.7/5 (28 download)

DOWNLOAD NOW!


Book Synopsis Practical Statistical Power Analysis by : Zhiyong Zhang

Download or read book Practical Statistical Power Analysis written by Zhiyong Zhang and published by Isdsa Press. This book was released on 2018-05 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of conducting a statistical power analysis at the beginning of a study is universally accepted. Without careful planning, a study can easily fail to detect an existing effect by chance. This book teaches how to conduct power analysis for a range of models from correlation and t-test to structural equation models and multilevel models. Both a graphical Web software WebPower and an R package are introduced to practically conduct the analysis.

Essentials of Statistics for the Social and Behavioral Sciences

Download Essentials of Statistics for the Social and Behavioral Sciences PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 0471480762
Total Pages : 291 pages
Book Rating : 4.4/5 (714 download)

DOWNLOAD NOW!


Book Synopsis Essentials of Statistics for the Social and Behavioral Sciences by : Barry H. Cohen

Download or read book Essentials of Statistics for the Social and Behavioral Sciences written by Barry H. Cohen and published by John Wiley & Sons. This book was released on 2004-04-01 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master the essential statistical skills used in social andbehavioral sciences Essentials of Statistics for the Social and Behavioral Sciencesdistills the overwhelming amount of material covered inintroductory statistics courses into a handy, practical resourcefor students and professionals. This accessible guide covers basicto advanced concepts in a clear, concrete, and readablestyle. Essentials of Statistics for the Social and Behavioral Sciencesguides you to a better understanding of basic concepts ofstatistical methods. Numerous practical tips are presented forselecting appropriate statistical procedures. In addition, thisuseful guide demonstrates how to evaluate and interpret statisticaldata, provides numerous formulas for calculating statistics fromtables of summary statistics, and offers a variety of workedexamples. As part of the Essentials of Behavioral Science series, this bookoffers a thorough review of the most relevant statistical conceptsand techniques that will arm you with the tools you'll need forknowledgeable, informed practice. Each concise chapter featuresnumerous callout boxes highlighting key concepts, bulleted points,and extensive illustrative material, as well as "Test Yourself"questions that help you gauge and reinforce your grasp of theinformation covered.

Applied Statistics for the Behavioral Sciences

Download Applied Statistics for the Behavioral Sciences PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 514 pages
Book Rating : 4.:/5 (45 download)

DOWNLOAD NOW!


Book Synopsis Applied Statistics for the Behavioral Sciences by : Dennis E. Hinkle

Download or read book Applied Statistics for the Behavioral Sciences written by Dennis E. Hinkle and published by . This book was released on 1979 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Behavioral Research Data Analysis with R

Download Behavioral Research Data Analysis with R PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9781461412380
Total Pages : 245 pages
Book Rating : 4.4/5 (123 download)

DOWNLOAD NOW!


Book Synopsis Behavioral Research Data Analysis with R by : Yuelin Li

Download or read book Behavioral Research Data Analysis with R written by Yuelin Li and published by Springer Science & Business Media. This book was released on 2011-12-02 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written for behavioral scientists who want to consider adding R to their existing set of statistical tools, or want to switch to R as their main computation tool. The authors aim primarily to help practitioners of behavioral research make the transition to R. The focus is to provide practical advice on some of the widely-used statistical methods in behavioral research, using a set of notes and annotated examples. The book will also help beginners learn more about statistics and behavioral research. These are statistical techniques used by psychologists who do research on human subjects, but of course they are also relevant to researchers in others fields that do similar kinds of research. The authors emphasize practical data analytic skills so that they can be quickly incorporated into readers’ own research.

Statistical Power Analysis

Download Statistical Power Analysis PDF Online Free

Author :
Publisher : Routledge
ISBN 13 : 1135625328
Total Pages : 247 pages
Book Rating : 4.1/5 (356 download)

DOWNLOAD NOW!


Book Synopsis Statistical Power Analysis by : Kevin R. Murphy

Download or read book Statistical Power Analysis written by Kevin R. Murphy and published by Routledge. This book was released on 2003-08-01 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.