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Sample Size & Power Analysis in GraphPad Prism
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class="grid-container"><div class="grid-x"><div class="cell"><div class="cell medium-shrink mb-6"><span class="badge badge-v2 badge-v2--early-access">JUST ADDED</span></div><h1 class="heading section-hero__title">Sample Size & Power Analysis</h1><div class="section-hero__description">Explore relationships between Power, Sample Size, and Effect Size. Now part of <!-- --> <a href="/cloud" class="link text-color-4">Prism Cloud</a>.</div><div class="grid-x grid-margin-x grid-margin-y section-hero__action"><div class="cell medium-shrink"><div class="grid-x grid-margin-x grid-margin-y"><div class="cell shrink medium-shrink"><a href="//www.graphpad.com/demos/" type="button" class="btn btn-primary btn-s section-hero__button">Start a Free Trial</a></div><div class="cell shrink medium-shrink"><a href="//www.graphpad.com/how-to-buy/" type="button" class="btn btn-outline2-info-light btn-s section-hero__button">Pricing</a></div></div></div></div><div class="section-hero__background section-hero__background--right section-hero__background--bottom"><img class="image h-60" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/survival-analysis/graphic-step-graph-576.png"/></div></div></div></div></section><section class="landing-simple-section bg-color-black--02"><div class="grid-container"><div class="grid-x"><div class="cell"><h2 class="heading landing-simple-section__title-v2 text-center mt-0 mb-0"><div>Explore the relationship between Power, <br> Sample Size and Effect Size</div></h2><div class="landing-simple-section__description-v2 text-l text-center mt-4">Fully adjustable parameters to calculate key values. Determine the sample size needed to detect a predicted effect size, or find the smallest detectable effect size when working with a limited sample size.</div><div class="grid-x grid-margin-x grid-margin-y justify-content-center"><div class="cell small-12 medium-6"><div class="box"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/power-analysis/plot_screen.png"/></div></div><div class="cell small-12 medium-6"><div class="box"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/power-analysis/table_screen.png"/></div></div></div></div></div></div></section><section class="landing-simple-section"><div class="grid-container"><div class="grid-x"><div class="cell"><h2 class="heading landing-simple-section__title-v2 text-center mt-0 mb-0">Perform Power Analysis Easily</h2><div class="landing-simple-section__description-v2 text-l text-center mt-4">Walk through the analysis using detailed, intuitive explanations, or jump in with a default set of adjustable parameters</div><div class="grid-x grid-padding-x align-items-start feature"><div class="cell small-12 medium-6 feature__meta"><div class="feature__meta--indent"><div class="grid-x"><div class="cell shrink"><div class="feature__meta-number">1</div></div><div class="cell auto"><h3 class="heading feature__meta-title heading-l">Multiple experiment designs</h3><div class="feature__meta-description">Choose the most suitable experimental design for the research you want to perform.</div><div class="feature__meta-description">Tailor your sample size to the specifics of your study, ensuring that each experiment is sufficiently powered to detect your predicted differences or relationships. Optimize your research efforts by starting with a solid foundation in experimental design and statistical planning.</div></div></div></div></div><div class="cell small-12 medium-6 feature__image"><div class="feature__image--indent"><span class="image-caption"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/power-analysis/experiment 1.png"/></span></div></div></div><div class="grid-x grid-padding-x align-items-start feature"><div class="cell small-12 medium-6 feature__meta"><div class="feature__meta--indent"><div class="grid-x"><div class="cell shrink"><div class="feature__meta-number">2</div></div><div class="cell auto"><h3 class="heading feature__meta-title heading-l">User-friendly interface</h3><div class="feature__meta-description">Make confident choices using a clear, simple interface providing contextual explanations for every option. Get to your results faster through the use of good, sensible default values to streamline calculation</div></div></div></div></div><div class="cell small-12 medium-6 feature__image"><div class="feature__image--indent"><span class="image-caption"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/power-analysis/step3_screen.png"/></span></div></div></div><div class="grid-x grid-padding-x align-items-start feature"><div class="cell small-12 medium-6 feature__meta"><div class="feature__meta--indent"><div class="grid-x"><div class="cell shrink"><div class="feature__meta-number">3</div></div><div class="cell auto"><h3 class="heading feature__meta-title heading-l">Clear explanations of results</h3><div class="feature__meta-description">Understand the relationship between sample size, power, and effect size in your experiment.</div><div class="feature__meta-description">See how different parameters influence the outcome of the study.</div></div></div></div></div><div class="cell small-12 medium-6 feature__image"><div class="feature__image--indent"><span class="image-caption"><img class="image" alt="" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/power-analysis/results_screen.png"/></span></div></div></div></div></div></div></section><section class="landing-simple-section bg-color-black--02 py-8"><div class="grid-container"><div class="grid-x"><div class="cell"><h2 class="heading landing-simple-section__title-v2 text-center mt-0 mb-6">Power Analysis Highlights</h2><div class="grid-x grid-margin-x grid-margin-y justify-content-center"><div class="cell small-12 medium-6"><p class="post-element__paragraph">Highlights:</p><ul class="ul ul-default post-element__ul"><li class="li post-element__list-item">Multiple experimental designs to choose from</li><li class="li post-element__list-item">Fast and interactive data exploration and graphing</li><li class="li post-element__list-item">Simple and clear explanations of all statistical terms and choices</li><li class="li post-element__list-item">Intuitive interfaces suitable for both newcomers and biostatisticians</li></ul></div><div class="cell small-12 medium-6"><div class="box bg-color-black--02 px-8 py-4"><p class="post-element__paragraph">Maximize the impact of your research with our advanced Power and Sample Size Analysis feature. Designed specifically for scientists, it ensures you achieve statistically significant results without unnecessary resource expenditure.</p><p class="post-element__paragraph">Optimize your experiments from the start by accurately determining the ideal sample size needed to detect true effects. Streamline your research process, conserve valuable resources, and boost the reliability of your findings鈥攁ll within one platform. Make every study count with precision planning and analysis.</p></div></div></div></div></div></div></section><section class="section-try-for-free"><div class="grid-container"><div class="grid-x justify-content-center"><div class="cell text-center pt-5"><a href="//www.graphpad.com/demos/" type="button" class="btn btn-primary">Start Free 30 Day Trial</a><p class="text-color-white">No credit card required.</p></div></div></div></section></div></main><footer class="footer"><div class="grid-container"><div class="grid-x grid-margin-x grid-padding-x"><div class="cell large-12"><div class="footer__nav"><div class="grid-x grid-margin-x grid-padding-y"><div class="cell small-6 medium-auto large-auto"><div class="footer__nav-list_title">SCIENTIFIC SOFTWARE</div><ul class="footer__nav-list"><li class="footer__nav-list_item"><a href="/features" class="footer__nav-list_item-link">GraphPad Prism</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/demos/" class="footer__nav-list_item-link">Prism Free Trial</a></li><li class="footer__nav-list_item"><a href="/enterprise" class="footer__nav-list_item-link">Enterprise</a></li><li class="footer__nav-list_item"><a href="/customers" class="footer__nav-list_item-link">Prism Customers</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/scientific-software/instat/" class="footer__nav-list_item-link">InStat</a></li><li class="footer__nav-list_item"><a href="/features/power-analysis" class="footer__nav-list_item-link">StatMate</a></li></ul></div><div class="cell small-6 medium-auto large-auto"><div class="footer__nav-list_title">HOW TO BUY</div><ul class="footer__nav-list"><li class="footer__nav-list_item"><a href="//www.graphpad.com/how-to-buy/" class="footer__nav-list_item-link">Pricing</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/how-to-buy/student/" class="footer__nav-list_item-link">Student Pricing</a></li><li class="footer__nav-list_item"><a href="/free-course-licenses" class="footer__nav-list_item-link">Professor Course Licenses</a></li><li class="footer__nav-list_item"><a href="https://www.graphpad-prism.cn" class="footer__nav-list_item-link">GraphPad China</a></li></ul></div><div class="cell small-6 medium-auto large-auto"><div class="footer__nav-list_title">DATA ANALYSIS RESOURCES</div><ul class="footer__nav-list"><li class="footer__nav-list_item"><a href="//www.graphpad.com/quickcalcs/" class="footer__nav-list_item-link">QuickCalcs</a></li><li class="footer__nav-list_item"><a href="/resources" class="footer__nav-list_item-link">Product Tutorials</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/guides/prism/latest/statistics/" class="footer__nav-list_item-link">Statistics Guide</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/guides/prism/latest/curve-fitting/" class="footer__nav-list_item-link">Curve Fitting Guide</a></li><li class="footer__nav-list_item"><a href="/prism-academy" class="footer__nav-list_item-link">Prism Academy</a></li></ul></div><div class="cell small-6 medium-auto large-auto"><div class="footer__nav-list_title">HELP</div><ul class="footer__nav-list"><li class="footer__nav-list_item"><a href="//www.graphpad.com/support/" class="footer__nav-list_item-link">Support</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/guides/prism/latest/user-guide/" class="footer__nav-list_item-link">Prism User Guide</a></li></ul></div><div class="cell small-6 medium-auto large-auto"><div class="footer__nav-list_title">COMPANY</div><ul class="footer__nav-list"><li class="footer__nav-list_item"><a href="/company" class="footer__nav-list_item-link">About</a></li><li class="footer__nav-list_item"><a href="https://www.dotmatics.com/about-careers" class="footer__nav-list_item-link">Careers</a></li><li class="footer__nav-list_item"><a href="https://www.dotmatics.com/portfolio" class="footer__nav-list_item-link">Portfolio</a></li><li class="footer__nav-list_item"><a href="https://www.dotmatics.com" class="footer__nav-list_item-link">Dotmatics</a></li><li class="footer__nav-list_item"><a href="//www.graphpad.com/support" class="footer__nav-list_item-link">Contact</a></li></ul></div></div></div></div></div></div><div class="footer__copyright-v3"><div class="grid-container"><div class="grid-x grid-margin-x grid-padding-x align-items-center"><div class="cell small-12 medium-shrink"><div class="footer__logo-v3"><a href="//www.graphpad.com/" class="link--external logo-link"><img class="image logo" alt="GraphPad by Dotmatics" src="https://cdn.graphpad.com/assets/18.7.33/assets/images/graphpad/logo/logo-graphpad-dotmatics.svg"/></a></div></div><div class="cell medium-auto"><div class="footer__copyright-v3_text">漏 2025 GraphPad Software. 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