Standard Deviation
The standard deviation is a statistical measure of the dispersion or uncertainty in a random variable. The standard deviation is the square root of the variance, a measure of how sp...
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Modern gas chromatographs are expected to deliver the highest performance levels, but actual performance can suffer because of a number of causes that include poor sample preparation, poor injectio...
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Abstract
This article shows how Probabilistic Tolerance Intervals of the form, "We are 99% confident that 99% of the measurements will fall within the calculated tolerance limits" can be u...
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Since its discovery in food products in 2002, acrylamide has been widely and frequently analysed worldwide and several databases have been established in many countries for monitoring purposes. The...
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Some of what Larry Summers said about scientific and mathematical aptitudes was sensible enough. And some of it was the kind of bosh you can expect from an economist, as Mr. Summers is.Reflections ...
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Bromine is a natural component of water, most commonly occurring as the bromide ion (Br–). Ozonolysis, a common procedure for purifying drinking waters, converts bromide to bromate (BrO3
...
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ABSTRACT
Vagueness in the ICH Q2A and Q2B guidelines necessitates effective protocol design and data analysis. For specificity (detection in the presence of interfering substanc...
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IndexIQ is still waiting for approval for its January filings for ETFs based on "intangible" qualities such as innovation, power and productivity. In the meantime, the developer of so-called "next-...
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Measurements of the abundances of naturally occurring stable isotopes in pharmaceutical materials can be used to quantitatively characterize the sources of the products and the synthetic processes ...
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Recently, I met a man at a bar who asked me what I did. Not in the mood to split hairs over whether he meant “money” work or inner calling, I answered, apparently slurring heavily: R...
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Recently, I met a man at a bar who asked me what I did. Not in the mood to split hairs over whether he meant “money” work or inner calling, I answered, apparently slurring heavily: ...
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Standard Deviation
How Close is Close Enough? Accuracy and Precision
