Working With Sample Data: Exploration and Inference Copyright © Business Expert Press, LLC, 2012. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means--electronic, mechanical, photocopy, recording, or any other except for brief quotations, not to exceed 400 words, without the prior permission of the publisher. First published in 2011 by Business Expert Press, LLC 222 East 46th Street, New York, NY 10017 www.businessexpertpress.com ISBN-13: 978-1-60649-213-0 (paperback) ISBN-13: 978-1-60649-214-7 (e-book) DOI 10.4128/9781606492147