Introduction to Statistics in Metrology

Abstract

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Speaking Stata: Finding the denominator: Minimum sample size from percentages

“…Talking about "precision" runs into a problem where many statistical people want to use that term to refer to the variability (reliability) of repeated measurements, a widespread if not universal usage (see, for example, Eisenhart [1968]). I commend the term "resolution" broadly as used by Murphy (1997) and Crowder et al (2020). This term has the secondary advantage that it also covers cases where the resolution is a matter of rounding to halves, quarters, eighths, other fractions that are powers of 2, or even to yet more unusual fractions.…”

Environmental Externalities of Secondhand Markets—Based on a Dutch Auctioning Company

“…This means that the exact distribution of Y is not of a known form. An analytical solution for calculating percentile intervals is to use first-order Taylor approximations, but this approach does not work well when standard deviations are relatively large [26] (pp. 131-151), which is often the case in our analysis.…”

“…For this reason, Monte Carlo simulation will be used, which performs well compared to other approximation methods [27] and is used more often in this field [23,24]. A number of 1 million samples per variable will be used, based on [26] (pp. 153-180).…”

Forks Over Knives: Predictive Inconsistency in Criminal Justice Algorithmic Risk Assessment Tools

“…Measurement error is the difference between a measurement and the true value of a quantity (Crowder et al, 2020). It is typically described using random , systematic or differential error models (Luijken et al, 2019).…”