NCSS PASS 2025 Full Version – Professional Sample Size Calculation and Statistical Power Analysis Tool

In the field of scientific research and data analysis, determining an appropriate sample size is a crucial step that can make or break the validity of a study. NCSS PASS 2025 (Power Analysis and Sample Size) is a professional-grade solution tailored to researchers, statisticians, and students, helping them perform complex calculations with precision and efficiency.
Overview of NCSS PASS 2025
NCSS PASS stands for Power Analysis and Sample Size and is developed by NCSS LLC, a leading company in statistical software. This program is specifically designed to help users determine the sample sizes needed for a wide range of statistical studies, as well as evaluate the statistical power of various hypothesis tests.
What makes PASS stand out is its ability to handle hundreds of statistical scenarios—from basic t-tests and chi-square tests to complex procedures like survival analysis, regression models, and mixed-effects models. Its intuitive interface and detailed guidance make it a staple in labs and research centers worldwide.
You can also download NCSS Pro 2025.
Key Features of NCSS PASS 2025
- PASS 2025 provides more than 970 sample size calculation procedures for different study designs. From simple two-group comparison studies to complex designs such as factorial designs, crossover studies, or cluster randomized trials. Each procedure is optimized to ensure the highest accuracy.
- PASS 2025 has a wizard-style interface, guiding users step by step through the calculations. The menu system is logically organized by type of analysis, with available templates so that users can quickly start working.
- The software automatically generates detailed reports with full information about assumptions, calculation formulas, and results. Power curves and sample size plots are automatically generated, helping users visualize the relationship between research parameters.
- PASS 2025 has the ability to export results to many different formats such as Excel, Word, or PDF. This makes sharing results and integrating them into research reports easier than ever.
- The software comes with hundreds of real-world examples from different fields such as medicine, biology, psychology, and economics. These examples not only help users understand how to use it, but also provide insights on how to apply it in specific situations.
- The calculation algorithms are based on reputable scientific studies and are constantly updated to match modern statistical methods.
- Processing speed is also a big plus of PASS. Even with complex calculations requiring Monte Carlo simulations, the software still gives quick results.
- The help system and documentation are written in great detail, along with scientific references, helping users not only know how to use but also understand the nature of the calculations.

NCSS PASS 2025 is suitable for many different audiences. Researchers in the biomedical field will find specialized tools for clinical trials and epidemiological studies. Professionals in the pharmaceutical industry can use dedicated modules for bioequivalence studies and drug development. Statistics students and lecturers also benefit greatly from the software’s educational features, with step-by-step examples and detailed explanations of each concept. This makes learning and teaching much more effective. Our free version will help you experience a free and extremely useful software.
Software Information
Field | Details |
---|---|
File Name | NCSS PASS 2025 v25.0.2 |
Author | NCSS LLC |
Version | 2022025 v25.0.2 |
Size | 336 MB |
Release Date | January 15, 2025 |
Languages | English |
Supported OS | Windows 10/11 (64-bit only) |
System Requirements
Component | Minimum Requirement | Recommended Requirement |
---|---|---|
OS | Windows 10 (64-bit) | Windows 11 (64-bit) |
CPU | Intel Core i3 or AMD equivalent | Intel Core i5 or AMD Ryzen 5 |
RAM | 4 GB | 8 GB or higher |
Storage | 500 MB available space | 1 GB available space |

NCSS PASS 2025 is a valuable investment for anyone involved in scientific research. Combining powerful features with an accessible interface, it has earned a solid reputation in the global research community. Investing in a tool like PASS doesn’t just save time—it elevates the quality and reliability of your studies.
Download NCSS PASS 2025
Click on the button below to start the free download NCSS PASS 2025. This is a complete offline installer and standalone setup for NCSS PASS 2025. This would be compatible with 64-bit Windows.
Archive Password: 123
Need help with installation? View Installation Guide