Praise for the previous edition of Explaining Psychological Statistics "I teach a master's level, one-semester statistics course, and it is a challenge to find a textbook that is at the right level. Barry Cohen's book is the best one I have found. . . . I like the fact that the chapters have different sections that allow the professor to decide how much depth of coverage to include in his/her course. . . . This is a strong and improved edition of an already good book." —Karen Caplovitz Barrett, PhD, Professor, and Assistant Department Head of Human Development and Family Studies, Colorado State University "The quality is uniformly good. . . . This is not the first statistics text I have read but it is one of the best." —Michael Dosch, PhD, MS, CRNA, Associate Professor and Chair, Nurse Anesthesia, University of Detroit Mercy A clear and accessible statistics text— now fully updated and revised Now with a new chapter showing students how to apply the right test in the right way to yield the most accurate and true result, Explaining Psychological Statistics, Fourth Edition offers students an engaging introduction to the field. Presenting the material in a logically flowing, non-intimidating way, this comprehensive text covers both introductory and advanced topics in statistics, from the basic concepts (and limitations) of null hypothesis testing to mixed-design ANOVA and multiple regression. The Fourth Edition covers: Basic statistical procedures Frequency tables, graphs, and distributions Measures of central tendency and variability One- and two-sample hypothesis tests Hypothesis testing Interval estimation and the t distribution

A comprehensive and user-friendly introduction to statistics for behavioral science students--revised and updated

Refined over seven editions by master teachers, this book gives instructors and students alike clear examples and carefully crafted exercises to support the teaching and learning of statistics for both manipulating and consuming data.

One of the most popular and respected statistics texts in the behavioral sciences, the Seventh Edition of Introductory Statistics for the Behavioral Sciences has been fully revised. The new edition presents all the topics students in the behavioral sciences need in a uniquely accessible and easy-to-understand format, aiding in the comprehension and implementation of the statistical analyses most commonly used in the behavioral sciences.

The Seventh Edition features:

A continuous narrative that clearly explains statistics while tracking a common data set throughout, making the concepts unintimidating and memorable, and providing a framework that connects all of the topics and allows for easy comparison of different statistical analyses

Coverage of important aspects of research design throughout the text, such as the "correlation is not causality" principle

Updated and annotated SPSS output at the end of each chapter with step-by-step instructions

Updated examples and exercises

An expanded website, at www.wiley.com/go/welkowitz, with test bank, chapter quizzes, and PowerPoint slides for instructors, as well as a second website for students with additional basic math coverage, math review exercises, a study guide, a set of additional SPSS exercises, and more downloadable data sets

"The section on testing your new business concept is unlike anything in any other book on start-ups. How much is it worth to know that your new business is something your customers will want--before you invest in it?" --Pat Cunningham, "Wall Street Journal" Advertising Advisor and former Vice Chairman, N. W. Ayer Global Advertising Agency

"Start-Up Smarts is an explosive work of ten powerful, practical steps that lay out reality." --Dr. Jeffrey Magee, Publisher, "Performance Magazine"

To make sure your start-up succeeds in the most profitable way, you need to plan and prepare your way to prosperity. This means learning the secrets of successful entrepreneurs--from knowing whom to trust to adapting in a changing marketplace. Start-up specialists and thriving business owners Barry H. Cohen and Michael Rybarski reveal the critical keys to getting your new business up and running a profit, in-cluding how to:

• Create a Flexible Business Plan
• Find Out What Your Customers Really Want
• Capitalize on the Right Trends
• Hire the Best People
• Choose the Most Lucrative Partners

Complete with real-life success stories from first-time entrepreneurs and the best businesses to start right now, "Start-Up Smarts" guarantees your new business will prosper in any market