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Statistical Power Analysis for the Behavioral Sciences

Statistical Power Analysis for the Behavioral Sciences Second Edition Statistical Power Analysis for the Behavioral Sciences Second Edition Jacob Cohen Department of Psychology New York University New York, New York ~ LAWRENCE ERLBAUM ASSOCIATES, PUBLISHERS Copyright 1988 by Lawrence Erlbaum Associates All rights reserved. No part of this book may be reproduced in any form, by photostat, microform, retrieval system, or by any other means, without the prior written permission of the publisher. Library of Congress Cataloging-in-Publication Data Cohen, Jacob.

Statistical Power Analysis for the Behavioral Sciences Second Edition Jacob Cohen Department of Psychology New York University New York, New York

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