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Routledge Routledge
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Library of Congress Cataloging‑in‑Publication Data
Urdan, Timothy C.
Statistics in plain English / Tim Urdan. ‑‑ 3rd ed.
p. cm.
Includes bibliographical references and index.
ISBN 978‑0‑415‑87291‑1
1. Statistics‑‑Textbooks. I. Title.
2010
‑‑dc22 2010000438
Visit the Taylor & Francis Web site at
and the Psychology Press Web site at
ISBN 0-203-85117-X Master e-book ISBN
To Ella and Nathaniel. Because you rock.
Contents
Preface ix
1Chapter 1Chapter Introduction to Social Science Research Principles and Terminology 1
Populations and Samples, Statistics and Parameters 1
Sampling Issues 3
Types of Variables and Scales of Measurement 4
Research Designs 4
Making Sense of Distributions and Graphs 6
Wrapping Up and Looking Forward 10
Glossary