My Coefficient a is Negative!   By David P. Nichols Principal Support Statistician and Manager of Statistical Support SPSS Inc. From SPSS Keywords, Number 68, 1999   In classical test…
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1. Contrived example, odds ratio of 2 Below we have a data file with information about families containing the husband’s income (in thousands of dollars) ranging from 10,000 to 12,000,…
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Data Setup for Comparing Means in SPSS David P. Nichols Senior Support Statistician SPSS, Inc. April 1994 Testing hypotheses about equality of means is one of the most commonly used…
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This page was adapted from a web page at the SPSS web page.  We thank SPSS for their permission to adapt and distribute this page via our web site.  …
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Introduction This page shows the basics of entering data into the SPSS data editor.  The SPSS data editor can be a good choice for entering your data.  It has a friendly…
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1. Reading dates in data This module will show how to read date variables, use date functions, and use date display formats in SPSS. You are assumed to be familiar…
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Page 433 Table 17.1 get file ‘c:pma5depress.sav’. compute inccat = 0. if income ge 20 inccat = 1. crosstabs sex by inccat. Page 434 Table 17.2 crosstabs sex by inccat…
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Version info: Code for this page was tested in SPSS 20. For this chapter, you will need to use the syntax provided in Appendix A to access the School and…
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Limitations of linear regression Page 218 Figure 7.1  Linear regression of a dichotomous Y variable (0 = open schools, 1 = close schools) on a measurement X variable (years lived…
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page 16 Figure 2.1 A scatterplot showing the relationship between income (in thousands of dollars) and education (in years) for the population of employed Canadians. The line connects the mean…
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