Are you confused by SPSS?   Do you understand the concepts of statistics but struggle with the computer analysis?   Are you tired of figuring out in hours what should only take you minutes?   Or are you just looking for a straightforward, comprehensive reference for SPSS?   "SPSS for Windows Step by Step: A Simple Guide and Reference," "15.0 Update" efficiently shows you how to perform the most common data analysis procedures in SPSS.  The first part of the book explains the basics of creating and formatting a data set, and includes a chapter on graphs that accommodates the changes in SPSS 15.0.  Chapters 6-28 explain, step by step, the most common procedures in the Base System Module and the Advanced and Regression Modules.