If you are using a legitimate copy, here is the standard procedure for version 20: System Check : Windows XP, Vista, or 7 (32-bit and 64-bit). : At least 1 GB (4 GB+ recommended for modern performance). Disk Space : Minimum 800 MB for the core application. Installation Run the installer as an Administrator
Released in 2011, version 20 is often considered a "sweet spot" in the SPSS timeline. It introduced and improved output formatting while remaining less resource-intensive than the subsequent Creative Cloud-era versions. For many students and researchers, the statistical tests provided in Version 20 (ANOVA, regression, non-parametric tests, and factor analysis) are more than sufficient for standard academic publishing. The "Activated" Component and Accessibility IBM SPSS Statistics 20 Activated Minified 250mb