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Statistics for the Behavioral Sciences by Frederick J. Gravetter, Larry B. Wallnau ISBN 10: 1305504917 ISBN 13: 9781305504912

Statistics is one of the most practical and essential courses that you will take, and a primary goal of this popular text is to make the task of learning statistics as simple as possible. Straightforward instruction, built-in learning aids, and real-world examples have made STATISTICS FOR THE BEHAVIORAL SCIENCES, 10th Edition the text selected most often by instructors for their students in the behavioral and social sciences. The authors provide a conceptual context that makes it easier to learn formulas and procedures, explaining why procedures were developed and when they should be used. This text will also instill the basic principles of objectivity and logic that are essential for science and valuable in everyday life, making it a useful reference long after you complete the course.

Statistics is one of the most practical and essential courses that you will take, and a primary goal of this popular text is to make the task of learning statistics as simple as possible. Straightforward instruction, built-in learning aids, and real-world examples have made STATISTICS FOR THE BEHAVIORAL SCIENCES, 10th Edition the text selected most often by instructors for their students in the behavioral and social sciences. The authors provide a conceptual context that makes it easier to learn formulas and procedures, explaining why procedures were developed and when they should be used. This text will also instill the basic principles of objectivity and logic that are essential for science and valuable in everyday life, making it a useful reference long after you complete the course.

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CONTENTS

vii

5.4 Using z-Scores to Standardize a Distribution 141

5.5 Other Standardized Distributions Based on z-Scores 145

5.6 Computing z-Scores for Samples 148

5.7 Looking Ahead to Inferential Statistics 150

Summary 153

Focus on Problem Solving 154

Demonstration 5.1 155

Demonstration 5.2 155

Problems 156

CHAPTER 6 Probability 159

PREVIEW 160

6.1 Introduction to Probability 160

6.2 Probability and the Normal Distribution 165

6.3 Probabilities and Proportions for Scores

from a Normal Distribution 172

6.4 Probability and the Binomial Distribution 179

6.5 Looking Ahead to Inferential Statistics 184

Summary 186

Focus on Problem Solving 187

Demonstration 6.1 188

Demonstration 6.2 188

Problems 189

CHAPTER 7

Probability and Samples: The Distribution

of Sample Means 193

PREVIEW 194

7.1 Samples, Populations, and the Distribution

of Sample Means 194

7.2 The Distribution of Sample Means for any Population

and any Sample Size 199

7.3 Probability and the Distribution of Sample Means 206

7.4 More about Standard Error 210

7.5 Looking Ahead to Inferential Statistics 215

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