文档介绍：A First Course in
Design and Analysis
of Experiments
A First Course in
Design and Analysis
of Experiments
Gary W. Oehlert
University of Minnesota
Cover design by Victoria Tomaselli
Cover illustration by Peter Hamlin
Minitab is a registered trademark of Minitab, Inc.
SAS is a registered trademark of SAS Institute, Inc.
S-Plus is a registered trademark of Mathsoft, Inc.
Design-Expert is a registered trademark of Stat-Ease, Inc.
Library of Congress Cataloging-in-Publication Data.
Oehlert, Gary W.
A 2rst course in design and analysis of experiments / Gary W. Oehlert.
p. cm.
Includes bibligraphical references and index.
ISBN 0-7167-3510-5
1. Experimental Design I. Title
2000
—dc21 99-059934
Copyright c 2010 Gary W. Oehlert. All rights reserved.
This work is licensed under a “mons” license. Brie3y, you are free to
copy, distribute, and transmit this work provided the following conditions are met:
1. You must properly attribute the work.
2. You may not use this work mercial purposes.
3. You may not alter, transform, or build upon this work.
plete description of the license may be found at
/licenses/by-nc-nd//.
For Becky
who helped me all the way through
and for Christie and Erica
who put up with a lot while it was getting done
Contents
Preface xvii
1 Introduction 1
Why Experiment? . . . . . . . . . . . . . . . . . . . . . . 1
of an Experiment . . . . . . . . . . . . . . . 4
Terms and Concepts . . . . . . . . . . . . . . . . . . . . . 5
Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
More About Experimental Units . . . . . . . . . . . . . . 8
More About Responses . . . . . . . . . . . . . . . . . . . 10
2 Randomization and Design 13
Randomization Against Confounding . . . . . . . . . . . 14
Randomizing Other Things . . . . . . . . . . . . . . . . . 16
Performing a Randomization . . . . . . . . . . . . . . . . 17
Randomiz