**Business / Human Resources (HR) / Standard Deviation:** A statistic used as a measure of the dispersion or variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.

**Standard Noun Synonyms**: criterion, measure, benchmark, model, pattern, archetype, touchstone, yardstick, gauge, guide, guideline, paradigm, paragon, exemplar, example, sample, type, ideal, beau id‚al, rule, canon, law, requirement, precept, principle

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Science / Chemistry / Relative Standard Deviation: The relative standard deviation is a measure of precision, calculated by dividing the standard deviation for a series of measurements by the average measurement. MORE

Business / Finance / Standardized Value: A normal distribution with a mean of 0 and a standard deviation of 1. MORE

Business / Finance / Standard Error: The square root of the variance. A measure of dispersion of a set of data from its mean. MORE

Entertainment / Photography / Standard Lens: Lens with a focal length approximately equal to the diagonal of the film format with which it is used. MORE

Science / Chemistry / Standard Hydrogen Electrode: A platinum electrode that runs the half reaction 2 H+(aq, 1M) + 2 e- rightarrow H2(g, 1 atm), chosen as a reference for cell voltages. The electrode potential of the standard hydrogen electrode is def MORE

Business / Finance / Standard Industrial Classification (SIC): In statistics, a measure of the possible error in an estimate. Plus or minus 2 standard errors usually provides a 95% confidence interval. MORE