Prentice Hall and SPSS Inc. have joined forces to combine the standard data analysis software tool used by researchers worldwide and a manual. This edition is based on the professional version of SPSS software that enables users to perform a wide variety of statistical procedures in a quick and easy-to-use fashion. KEY TOPICS: A built-in editor helps readers build or modify command files, and enter raw data without exiting the program. The on-line statistical glossary helps interpret results. Readers can read and write SPSS/PC+ system files, ASCII files and other file formats from leading microcomputer spreadsheet and database programs. They can label variables and their values, define print formats and missing values for variables, create or recode variables, and sample and weigh cases. A wide range of powerful statistical techniques includes: analysis of variance, correlations, cross-tabulations, descriptive statistics, frequency counts, means, non-parametric tests, bivariate and multiple regression, and t- tests. SPSS/PC+ Studentware Plus products provide most features of the SPSS/PC+ Base System. Readers can identify up to 50 variables and 1500 cases.