Observational error

A scientist adjusts an atomic force microscopy (AFM) device, which is used to measure surface characteristics and imaging for semiconductor wafers, lithography masks, magnetic media, CDs/DVDs, biomaterials, optics, among a multitude of other samples.

Observational error (or measurement error) is the difference between a measured value of quantity and its true value. In statistics, an error is not a "mistake". Variability is an inherent part of things being measured and of the measurement process.

单词	Systematic effect
释义	Systematic effect 英语百科 Observational error Observational error (or measurement error) is the difference between a measured value of quantity and its true value. In statistics, an error is not a "mistake". Variability is an inherent part of things being measured and of the measurement process.
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Systematic effect

Observational error