,Essentials of Statistics
for the Behavioral Sciences
,Essentials of Statistics
for the Behavioral
Sciences
S E V E N T H E D I T I O N
Frederick J Gravetter
State University of New York College at Brockport
Larry B. Wallnau
State University of New York College at Brockport
Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain• United Kingdom • United States
, Essentials of Statistics for the Behavioral © 2011, 2008 Wadsworth, Cengage Learning
Sciences, 7th Edition
ALL RIGHTS RESERVED. No part of this work covered by the copyright herein
Frederick J Gravetter
may be reproduced, transmitted, stored, or used in any form or by any means,
Larry B. Wallnau
graphic, electronic, or mechanical, including but not limited to photocopying,
Executive Editor: Jon-David Hague recording, scanning, digitizing, taping, Web distribution, information networks,
Associate Developmental Editor: Tali Beesley or information storage and retrieval systems, except as permitted under
Assistant Editor: Rebecca Rosenberg Section 107 or 108 of the 1976 United States Copyright Act, without the prior
Editorial Assistant: Alicia McLaughlin written permission of the publisher.
Media Editor: Mary Noel
Marketing Manager: Tierra Morgan
Marketing Assistant: Anna Andersen For product information and technology assistance, contact us at
Marketing Communications Manager: Cengage Learning Customer & Sales Support, 1-800-354-9706.
Talia Wise
Content Project Manager: Charlene M. For permission to use material from this text or product, submit
Carpentier all requests online at www.cengage.com/permissions.
Creative Director: Rob Hugel Further permissions questions can be e-mailed to
Art Director: Vernon Boes .
Print Buyer: Linda Hsu
Rights Acquisitions Account Manager,
Text: Roberta Broyer Library of Congress Control Number: 2009932188
Rights Acquisitions Account Manager, ISBN-13: 978-0-495-81220-3
Image: Don Schlotman
ISBN-10: 0-495-81220-X
Production Service: Graphic World Inc.
Text Designer: Lisa Henry
Illustrator: Graphic World Inc. Wadsworth
Cover Designer: Roger Knox 20 Davis Drive
Cover Image: Astro Retro I by Lisa Belmont, CA 94002-3098
Kowalski USA
Compositor: Graphic World Inc. Cengage Learning is a leading provider of customized learning solutions with
office locations around the globe, including Singapore, the United Kingdom,
Australia, Mexico, Brazil, and Japan. Locate your local office at
www.cengage.com/global.
Cengage Learning products are represented in Canada by Nelson Education, Ltd.
To learn more about Wadsworth, visit www.cengage.com/wadsworth
Purchase any of our products at your local college store or at our preferred
online store www.ichapters.com
Printed in the United States of America
1 2 3 4 5 6 7 13 12 11 10 09
for the Behavioral Sciences
,Essentials of Statistics
for the Behavioral
Sciences
S E V E N T H E D I T I O N
Frederick J Gravetter
State University of New York College at Brockport
Larry B. Wallnau
State University of New York College at Brockport
Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain• United Kingdom • United States
, Essentials of Statistics for the Behavioral © 2011, 2008 Wadsworth, Cengage Learning
Sciences, 7th Edition
ALL RIGHTS RESERVED. No part of this work covered by the copyright herein
Frederick J Gravetter
may be reproduced, transmitted, stored, or used in any form or by any means,
Larry B. Wallnau
graphic, electronic, or mechanical, including but not limited to photocopying,
Executive Editor: Jon-David Hague recording, scanning, digitizing, taping, Web distribution, information networks,
Associate Developmental Editor: Tali Beesley or information storage and retrieval systems, except as permitted under
Assistant Editor: Rebecca Rosenberg Section 107 or 108 of the 1976 United States Copyright Act, without the prior
Editorial Assistant: Alicia McLaughlin written permission of the publisher.
Media Editor: Mary Noel
Marketing Manager: Tierra Morgan
Marketing Assistant: Anna Andersen For product information and technology assistance, contact us at
Marketing Communications Manager: Cengage Learning Customer & Sales Support, 1-800-354-9706.
Talia Wise
Content Project Manager: Charlene M. For permission to use material from this text or product, submit
Carpentier all requests online at www.cengage.com/permissions.
Creative Director: Rob Hugel Further permissions questions can be e-mailed to
Art Director: Vernon Boes .
Print Buyer: Linda Hsu
Rights Acquisitions Account Manager,
Text: Roberta Broyer Library of Congress Control Number: 2009932188
Rights Acquisitions Account Manager, ISBN-13: 978-0-495-81220-3
Image: Don Schlotman
ISBN-10: 0-495-81220-X
Production Service: Graphic World Inc.
Text Designer: Lisa Henry
Illustrator: Graphic World Inc. Wadsworth
Cover Designer: Roger Knox 20 Davis Drive
Cover Image: Astro Retro I by Lisa Belmont, CA 94002-3098
Kowalski USA
Compositor: Graphic World Inc. Cengage Learning is a leading provider of customized learning solutions with
office locations around the globe, including Singapore, the United Kingdom,
Australia, Mexico, Brazil, and Japan. Locate your local office at
www.cengage.com/global.
Cengage Learning products are represented in Canada by Nelson Education, Ltd.
To learn more about Wadsworth, visit www.cengage.com/wadsworth
Purchase any of our products at your local college store or at our preferred
online store www.ichapters.com
Printed in the United States of America
1 2 3 4 5 6 7 13 12 11 10 09
