ABSTRACT
In chapter 2 you learned how to read in and transform data. In this chapter you will learn commands to analyze the simplest analysis of variance (ANOVA) design, the one-factor completely randomized design, often called simply one-way or one-factor ANOVA. This is the appropriate analysis when participants are assigned to or belong to one of two or more groups, each participant has a score on the dependent variable, and you wish to compare the means of the various groups on this dependent variable. This chapter will not only include the commands for the overall (or “omnibus”) F test, but will also provide the techniques for testing planned contrasts, post hoc comparisons, and trend analyses. As noted in the preface and in chapter 1, throughout this book, primarily syntax will be taught, although the PAC methods that can be used with SPSS for Windows will be covered briefly at the end of each chapter. Knowing the syntax will allow the reader to access SPSS from either the mainframe or from Windows.
