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PASS software provides sample size tools for over 680 statistical test and confidence interval scenarios. Each tool has been carefully validated with published articles and/or texts.
•Cluster-Randomized •Conditional Power •Confidence Intervals •Correlation •Design of Experiments •Equivalence •Group-Sequential •Means
Free trial for 7 days
Small (<50 employees), Medium (50 to 1000 Enterprise (>1001 employees)
What is best?
•Means •Microarray •Non-Inferiority •Nonparametric •Normality •Proportions •Quality Control •Rates and Counts
What are the benefits?
• Companion software for teaching and learning • Managing and analyzing business data • Mass appraisal • Analyze and visualize data • Quality control
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In PASS, you can estimate the sample size for a statistical test or confidence interval in a few short steps. If you need guidance during any of the steps, PASS has excellent documentation, there are free training videos, and you can contact our team of PhD statisticians.
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PASS , is a leader in power analysis and sample size provides sample size tools for over 680 statistical test and confidence interval scenarios. NCSS readily imports all major types of data files; or you can copy-and-paste your data, or enter your data directly.
NCSS has excellent filtering and transformation features for managing your data.The analysis and graphics tools are easy to use and have built-in help messages for every option.Select the columns to be analyzed, choose the desired reports and plots, and click Run to obtain your results.There are over 80 plots available in NCSS.
Some plots are part of a general analysis procedure such as analysis of variance or regression, while other plots are standalone tools.All NCSS plots are highly customizable. Users are given control of the layout, symbols, titles, legend, axes, grid lines, and more. Plot settings are easily saved for future use or for sharing.
Each tool has been carefully validated with published articles and/or texts. PASS has been fine-tuned for over 20 years, and is now the leading sample size software choice for clinical trial, pharmaceutical, and other medical research. It has also become a mainstay in all other fields where sample size calculation or evaluation is needed.
In PASS, Researchers can estimate the sample size for a statistical test or confidence interval in a few short steps. If researchers need guidance during any of the steps, PASS has excellent documentation, there are free training videos, and users contact the team of PhD statisticians.
Finding the sample size procedure is easy using the drop-down menu, the procedure search, or the category tree .The sample size procedure tools are easy to use and have built-in help messages for every option. When a PASS procedure is run, the sample size results and corresponding plots are displayed in the output window. The sample Size Charts provide a graphical representation of the numeric results.
The sample size or power curves can be clicked to be shown in a separate window for viewing or saving. Navigation of the output is easy with the output navigation tree. The format of the output makes it easy to be viewed, copied and pasted, or saved. Multiple output runs can be sent to the output gallery for saving or for comparing sample size analyses. In short, PASS is powerful, productive, comprehensive, and easy-to-use statistics software.
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