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Preface
IBM® SPSS® Statistics is a comprehensive system for analyzing data. The Complex Samples
optional add-on module provides the additional analytic techniques described in this manual. The
Complex Samples add-on module must be used with the SPSS Statistics Core system and is
completely integrated into that system.
About SPSS Inc., an IBM Company
SPSS Inc., an IBM Company, is a leading global p rovider of predictive analytic software
and solutions. The company’s complete portfolio of products — data collection, statistics,
modeling and deployment — captures people’s attitudes and opinions, predicts outcomes of
future customer interactions, and then acts on these insights by embedding analytics into business
processes. SPSS Inc. solutions address interconnected business objectives across an entire
organization by focusing on the convergence of analytics, IT architecture, and business processes.
Commercial, government, and academic customers worldwide rely on SPSS Inc. technology as
a competitive advantage in attracting, retaining, and growing customers, while reducing fraud
and mitigating risk. SPSS Inc. was acquired by IBM in October 2009. For more information,
visit http://www.spss.com.
Technical support
Technical support is available to maintenance cus
tomers. Customers may contact
Technical Support for assistance in using SPSS Inc. products or for installation help
for one of the supported hardware environments. To reach Technical Support, see the
SPSS Inc. web site at http://support.spss.com or fi
nd your local office via the web site at
http://support.spss.com/default.asp?refpage=contactus.asp. Be prepared to identify yourself, your
organization, and your support agreement when requesting assistance.
Customer Service
If you have any questions concerning your shipment or account, contact your local office, listed
on the Web site at http://www.spss.com/worldwide. Please have your serial number ready for
identification.
Training Seminars
SPSS Inc. provides both public and onsite training seminars. All seminars feature hands-on
workshops. Seminars will be offered in major cities on a regular basis. For more information on
these seminars, contact your local office, listed on the Web site at http://www.spss.com/worldwide.
© Copyright SPSS Inc. 1989, 2010
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