Strategies to Approximate Random Sampling and Assignment (Pocket Guides to Social Work Research Methods)
by Patrick Dattalo
ISBN 13: 9780195378351
Format: Illustrated (216 pages) Publisher: Oxford University Press, USA Published: 12 Nov 2009
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Determining Sample Size: Balancing Power, Precision, and Practicality (Pocket Guides to Social Work Research Methods)
ISBN 13: 9780195315493
Format: Paperback (176 pages) Publisher: OUP USA Published: 31 Jan 2008