Statistical analysis

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to the spikes." typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/news/2023/09/new-nist-method-can-better-identify-sneaky-sugars-viruses-spiky-weapons"><span property="schema:name">New NIST Method Can Better Identify Sneaky Sugars on Viruses’ Spiky Weapons</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-09-28T12:00:00Z">September 28, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> A better picture of the sugars can increase our understanding of how humans get infected by the virus behind COVID-19 and other pathogens. </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2023/01/spotlight-meet-mentor-summer-undergraduates-nist-quantum-physicist-krister" typeof="schema:Article" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/news/2023/01/spotlight-meet-mentor-summer-undergraduates-nist-quantum-physicist-krister" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2023/01/23/DSC_1600.jpg?itok=m2b_CMiQ" width="100" height="67" alt="Man wearing safety glasses leans toward a tabletop optical laser setup." typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/news/2023/01/spotlight-meet-mentor-summer-undergraduates-nist-quantum-physicist-krister"><span property="schema:name">Spotlight: Meet a Mentor for Summer Undergraduates: NIST Quantum Physicist Krister Shalm</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-23T12:00:00Z">January 23, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> Quantum physicist Krister Shalm has a few spots in his laboratory for motivated undergrads. Do you know any STEM-centric college students who might be </div> </div> </div> </article> </div> <div> <article about="/news-events/news/2022/06/where-once-were-black-boxes-nists-new-lantern-illuminates" typeof="schema:Article" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/news/2022/06/where-once-were-black-boxes-nists-new-lantern-illuminates" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2022/05/16/22Genetic_Engineering_Texture.png?itok=H7ABPtBJ" width="100" height="60" alt="A large, complex machine (at left) sports a vast control panel filled with thousands of unlabeled switches, frustrating its user. Another smaller machine (at right) with just a few simple dials makes its user happier." typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/news/2022/06/where-once-were-black-boxes-nists-new-lantern-illuminates"><span property="schema:name">Where Once Were Black Boxes, NIST’s New LANTERN Illuminates</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-06-22T12:00:00Z">June 22, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary"> Researchers at the National Institute of Standards and Technology (NIST) have developed a new statistical tool that they have used to predict protein function. </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/news-events/news-updates/topic/249041">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Events</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-f30f3f372e4990a4eab8bc937d5c78a549d73f86f931a35a26df3fbac806059f"> <div> <article about="/news-events/events/2025/03/workshop-advancing-uv-germicidal-efficacy-measurement-metrology-standards" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/events/2025/03/workshop-advancing-uv-germicidal-efficacy-measurement-metrology-standards" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2025/01/16/NEW%20UV%20Germicidal%20Img.png?itok=jsgg-PUs" width="100" height="84" alt="Abstract blue image Advancing UV Germicidal Efficacy Measurement: Metrology, Standards, Data and Protocols " typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/events/2025/03/workshop-advancing-uv-germicidal-efficacy-measurement-metrology-standards"><span>Workshop: Advancing UV Germicidal Efficacy Measurement: Metrology, Standards, Data and Protocols</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Tue, Mar 18 - Thu, Mar 20 2025</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The U.S. Department of Commerce, National Institute of Standards and Technology (NIST) and the International Ultraviolet </div> </div> </div> </article> </div> <div> <article about="/news-events/events/2025/04/building-path-forward-meaningful-cannabis-breathalyzer-realization" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/news-events/events/2025/04/building-path-forward-meaningful-cannabis-breathalyzer-realization" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2025/01/13/Cannabis%20Breathalyzer.png?itok=cw8DdV2X" width="100" height="84" alt="Clipart of Person smoking Cannabis and images of cars" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/news-events/events/2025/04/building-path-forward-meaningful-cannabis-breathalyzer-realization"><span>Building a Path Forward for Meaningful Cannabis Breathalyzer Realization</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Wed, Apr 16 - Thu, Apr 17 2025</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> We are bringing together participants from government, forensic laboratories, industry, academia, law enforcement </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/news-events/upcoming-events/topic/249041">View All Events</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Projects and Programs</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-21dfd00e26972e4af5a52766d59045c4a1393541023ab55cdf11485b74016c0c"> <div> <article about="/programs-projects/standards-development-ensure-reliable-breath-analysis-field" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/programs-projects/standards-development-ensure-reliable-breath-analysis-field" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2024/07/10/Picture1%20summary%20use.png?itok=SGOuNpgV" width="100" height="67" alt="Breathalyzer" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/standards-development-ensure-reliable-breath-analysis-field"><span>Standards Development to Ensure Reliable Breath Analysis in the Field</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Numerous volatile organic compounds (VOCs) have been identified in human breath. These compounds can be produced by the body or by organisms in the body (e.g., bacteria or viruses) and provide a non-invasive window into human health. Inexpensive point-of-care devices are being developed to diagnose </div> </div> </div> </article> </div> <div> <article about="/programs-projects/statistical-methods-quantitative-near-field-scanning-probe-microwave-microscopy" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/statistical-methods-quantitative-near-field-scanning-probe-microwave-microscopy"><span>Statistical methods for quantitative near-field scanning probe microwave microscopy for material genomics</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> DESCRIPTION: Statistical efforts focus on extracting information from NSSM images contaminated by additive noise and artifacts. We developed robust implementations of local likelihood and local regression methods to level images, remove scan-dependent artifacts, and denoise images. Our methods </div> </div> </div> </article> </div> <div> <article about="/programs-projects/advanced-microwave-radiometer-metrology" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/programs-projects/advanced-microwave-radiometer-metrology" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/itl/sed/bsg/ghg_3194368_2.jpg?itok=ROM3UyJB" width="100" height="100" alt="radiometer_plot" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/advanced-microwave-radiometer-metrology"><span>Advanced Microwave Radiometer Metrology</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Using the NIST radiometer as a test bed, we studied the stability of temperature measurements for infrequent calibrations and developed stability metrics. We developed models to simulate output temperatures from the NIST radiometer, thus enabling the study of radiometer output without having to </div> </div> </div> </article> </div> <div> <article about="/programs-projects/uncertainty-estimation-interlaboratory-studies" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/programs-projects/uncertainty-estimation-interlaboratory-studies"><span>Uncertainty Estimation in Interlaboratory Studies</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> DESCRIPTION: Data sets consisting of multivariate samples occur increasingly often in applications in particular in in interlaboratory studies known as Key Comparisons in which the key comparison reference value (KCRV) is to be determined. The vector samples, being independent realizations of an </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/laboratories/projects-programs/topic/249041">View All Projects/Programs</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Publications</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-18906a6132d0c0b16e89a63335132412ca15733e2f07cb4ef5503bdc4eb958b0"> <div> <article about="/publications/value-assignment-and-uncertainty-evaluation-certified-reference-gas-mixtures" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/value-assignment-and-uncertainty-evaluation-certified-reference-gas-mixtures"><span>Value assignment and uncertainty evaluation for certified reference gas mixtures</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-09-09T12:00:00Z">September 9, 2024</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Christina Cecelski</span>, <span class="nist-author">Jennifer Carney</span>, <span class="nist-author">Antonio Possolo</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The procedures used to assign values to certified reference gas mixtures and to evaluate their associated uncertainties, which are described in ISO 6143, and </div> </div> </div> </article> </div> <div> <article about="/publications/benfords-law-atomic-spectra-and-opacity-databases" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/benfords-law-atomic-spectra-and-opacity-databases"><span>Benford's law in atomic spectra and opacity databases</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-04-21T12:00:00Z">April 21, 2024</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Yuri Ralchenko</span>, Jean-Christophe Pain</div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The intriguing law of anomalous numbers, also named Benford's law, states that the significant digits of data follow a logarithmic distribution favoring the </div> </div> </div> </article> </div> <div> <article about="/publications/improving-tenor-labeling-re-evaluating-topic-models-content-analysis" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/improving-tenor-labeling-re-evaluating-topic-models-content-analysis"><span>Improving the TENOR of Labeling: Re-evaluating Topic Models for Content Analysis</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-03-23T12:00:00Z">March 23, 2024</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item">Zongxia Li, Andrew Mao, Jordan Boyd-Graber, Daniel Stephens, <span class="nist-author">Emily Walpole</span>, <span class="nist-author">Alden A. Dima</span>, <span class="nist-author">Juan Fung</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Topic models are a popular tool for understanding text collections, but their evaluation has been a point of contention. Automated evaluation metrics such as </div> </div> </div> </article> </div> <div> <article about="/publications/continuous-mobile-manipulator-performance-measurement-data" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/publications/continuous-mobile-manipulator-performance-measurement-data"><span>Continuous Mobile Manipulator Performance Measurement Data</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-01-18T12:00:00Z">January 18, 2024</time> </div> </div> <div class="nist-teaser__type"> <div class="nist-field nist-field--label-inline text-long"> <div class="nist-field__label">Author(s)</div> <div class="nist-field__item"><span class="nist-author">Omar Aboul-Enein</span>, Henry Medeiros, Mili Shah, <span class="nist-author">Ya-Shian Li-Baboud</span>, Roger Bostelman, <span class="nist-author">Ann Virts</span></div> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> Mobile manipulators, which are robotic systems integrating an automatic or autonomous mobile base with a manipulator, can potentially enhance automation in many </div> </div> </div> </article> </div> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> <div class="paragraph paragraph--type--dynamic-content-list-topic paragraph--view-mode--default"> <h2 class="nist-block__title"> <div class="string">Software</div> </h2> <div class="nist-block " > <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-1a7ba74d3eaf45d6b07133e2e4b3d0d2c48b4439e7e60a99cc3199541bcefa83"> <div> <article about="/services-resources/software/smart-investment-tool" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/services-resources/software/smart-investment-tool" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2020/06/17/calculator.png?itok=3rgIW8Hn" width="48" height="100" alt="Calculator" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/services-resources/software/smart-investment-tool"><span>Smart Investment Tool</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2024-06-07T12:00:00Z">June 7, 2024</time> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> This tool calculates metrics for investment analysis documented in NIST Advanced manufacturing Series 200-5. It calculates net present value, internal rate of </div> </div> </div> </article> </div> <div> <article about="/services-resources/software/cost-assessment-tool-sustainable-manufacturing-cats" class="nist-teaser" > <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/services-resources/software/cost-assessment-tool-sustainable-manufacturing-cats" hreflang="en"><img loading="lazy" src="/sites/default/files/styles/thumbnail/public/images/2022/08/04/CostAnalysis.jpg?itok=XbfxwwXC" width="100" height="68" alt="Cost Analysis" typeof="foaf:Image" /> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/services-resources/software/cost-assessment-tool-sustainable-manufacturing-cats"><span>Cost Assessment Tool for Sustainable Manufacturing (CATS)</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2022-08-01T12:00:00Z">August 1, 2022</time> </div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> This tool uses techniques from ASTM E3200 for evaluating manufacturing investments from the perspective of environmentally sustainable manufacturing by pairing </div> </div> </div> </article> </div> <div> <article about="/services-resources/software/extreme-winds-and-wind-effects-structures" class="nist-teaser" > <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/services-resources/software/extreme-winds-and-wind-effects-structures"><span>Extreme Winds and Wind Effects on Structures</span> </a></h3> <div class="nist-teaser__date"> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary"> The Engineering Laboratory has an established long-term collaboration with the NIST Statistical Engineering Division in the analysis of extreme wind speeds and </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/services-resources/software/topic/249041">View All Software</a></div> </footer> </div> </div> </div> </div> </div> </div> <div class="margin-y-4"> </div> <div class="margin-y-4"> </div> <div class="margin-y-4"> </div> </div> </div> </div> </div> <div class="grid-container"> </div> </section> </section> </div> <div data-elastic-exclude>  <footer class="nist-footer padding-bottom-4"> <div class="grid-container nist-footer__info"> <div class="grid-row"> <div class="tablet:grid-col-6"> <div class="nist-footer__logo"> <a href="/" title="National Institute of Standards and Technology" rel="home"> <img class="nist-footer__logo-img" src="/libraries/nist-component-library/dist/img/logo/NIST-Logo-Brand-White.svg" alt="National Institute of Standards and Technology logo" width="300px" height="42px" /> </a> </div> <div class="nist-footer__contact"> <h3 class="nist-footer__contact-heading">HEADQUARTERS</h3> <address> 100 Bureau Drive<br> Gaithersburg, MD 20899<br> <a href="tel:301-975-2000">301-975-2000</a> </address> <p> <a href="mailto:do-webmaster@nist.gov">Webmaster</a> | <a href="https://www.nist.gov/about-nist/contact-us">Contact Us</a> | <a href="https://www.nist.gov/visit">Our Other Offices</a> </p> </div> </div> <div class="tablet:grid-col-6"> <div class="nist-footer__social-links"> <a class="nist-social nist-social--x-white" href=" https://x.com/NIST"> <span>X.com</span> </a> <a class="nist-social nist-social--facebook-white" href=" https://www.facebook.com/NIST"> <span>Facebook</span> </a> <a class="nist-social nist-social--linkedin-white" href=" https://www.linkedin.com/company/nist"> <span>LinkedIn</span> </a> <a class="nist-social nist-social--instagram-white" href=" https://www.instagram.com/nist/"> <span>Instagram</span> </a> <a class="nist-social nist-social--youtube-white" href=" https://www.youtube.com/NIST"> <span>YouTube</span> </a> <a class="nist-social nist-social--giphy-white" href=" https://giphy.com/nist"> <span>Giphy</span> </a> <a class="nist-social nist-social--rss-white" href=" https://www.nist.gov/news-events/nist-rss-feeds"> <span>RSS Feed</span> </a> <a class="nist-social nist-social--envelope-white" href=" https://public.govdelivery.com/accounts/USNIST/subscriber/new"> <span>Mailing List</span> </a> </div> <div class="nist-footer__feedback"> How are we doing? 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