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Chi-Squared Challenging using SPSS

  Chi-Squared Challenging using SPSS

A Chi-Square Challenge (or Test) procedure organizes your data pond variables into groups and computes a chi-square statistic. Here is the specific definition:

“The chi-square (chi, the Greek letter pronounced “kye”) statistic is a statistical technique used to determine if a “distribution of observed frequencies” differs from the “theoretical expected frequencies”…

Okay, this is a pretty clever explanation, however it really just means “does what I see match what I had thought I’d see”.

For example, the chi-square test could be used to determine whether a box of crayons contains equal quantities of blue, brown, green, orange, red, and yellow.

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Using IBM SPSS you can obtain your chi-test by selecting from the menus:

Analyze > Nonparametric Tests > Legacy Dialogs > Chi-Square…

From there, you can select one or more test variables. Each variable will produce a separate test.

Using a previous blog as an example, I might want to evaluate the results of a poll conducted on marriage, gender and an individual’s overall satisfaction with their life. Using SPSS I can determine (for an example) that there are 132 total “observations” -121 male and 12 female. Does my expected ratio of male v. female align to the actual?  Does my assumption that married females are significantly more satisfied with their life than males are? And so on…

Once again, SPSS makes statistical analysis easy.



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Jim Miller

Mr. Miller is an IBM certified and accomplished Senior Project Leader and Application/System Architect-Developer with over 30 years of extensive applications and system design and development experience. His current role is National FPM Practice Leader. His experience includes BI, Web architecture & design, systems analysis, GUI design and testing, Database modeling and systems analysis, design, and development of Client/Server, Web and Mainframe applications and systems utilizing: Applix TM1 (including TM1 rules, TI, TM1Web and Planning Manager), dynaSight - ArcPlan, ASP, DHTML, XML, IIS, MS Visual Basic and VBA, Visual Studio, PERL, Websuite, MS SQL Server, ORACLE, SYBASE SQL Server, etc. His Responsibilities have included all aspects of Windows and SQL solution development and design including: analysis; GUI (and Web site) design; data modeling; table, screen/form and script development; SQL (and remote stored procedures and triggers) development and testing; test preparation and management and training of programming staff. Other experience includes development of ETL infrastructure such as data transfer automation between mainframe (DB2, Lawson, Great Plains, etc.) systems and client/server SQL server and Web based applications and integration of enterprise applications and data sources. In addition, Mr. Miller has acted as Internet Applications Development Manager responsible for the design, development, QA and delivery of multiple Web Sites including online trading applications, warehouse process control and scheduling systems and administrative and control applications. Mr. Miller also was responsible for the design, development and administration of a Web based financial reporting system for a 450 million dollar organization, reporting directly to the CFO and his executive team. Mr. Miller has also been responsible for managing and directing multiple resources in various management roles including project and team leader, lead developer and applications development director. Specialties Include: Cognos/TM1 Design and Development, Cognos Planning, IBM SPSS and Modeler, OLAP, Visual Basic, SQL Server, Forecasting and Planning; International Application Development, Business Intelligence, Project Development. IBM Certified Developer - Cognos TM1 (perfect score 100% on exam) IBM Certified Business Analyst - Cognos TM1

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