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Mathematics & Statistics

Statistical analysis

News and Updates

Blog Posts

a graphic with a large 5 surrounded by objects from the post including mysterious museum objects, a blackboard with equations on it, a cellphone, and three vials. Additional text above the 5 reads "2019 Taking Measure."

Top 5 NIST Blog Posts of 2019

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Adam Pintar standing with arms crossed in front of a whiteboard covered with equations and graphs

One Statistical Paradigm to Rule Them All?

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White balls in a row

A Slice of Math Functions for Pi Day

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Projects and Programs

A Comparison of WD-EPMA Heterogeneity Testing Procedures

Ongoing
X-ray stage mapping (XSM) can be used to determine the extent of heterogeneity on the micron scale though it is more time consuming and not as accurate as the more rigorous NIST random-point (RP) testing procedure. The objective of this work is to demonstrate the advantage of the latter procedure...
radiometer_plot

Advanced Microwave Radiometer Metrology

Ongoing
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...
The word "TIME" appears and grows larger among line drawings of various types of clocks.

Advancing Statistical Methods for Next-Generation Clock Networks

Ongoing
Atomic clocks are key to a wide array of technologies and scientific experiments, including tests of fundamental physics. Clocks operating at optical frequencies have now demonstrated fractional stability and reproducibility at 10 -18, two orders of magnitude beyond their microwave predecessors...
footwear imprint image

Building Trust in Forensic Science: Footwear Analysis

Ongoing
Starting in 2015, SED staff members began reviewing published literature on the recommended practice for forensic examiners to provide likelihood ratios (LRs) as a weight of evidence to summarize their findings in reports or testimony. While several stated motivations for providing likelihood ratios...

Publications

Software

Calculator

Smart Investment Tool

This tool calculates metrics for investment analysis documented in NIST Advanced manufacturing Series 200-5. It calculates net present value, internal rate of
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