MEASUREMENT ERROR
\mˈɛʒəmənt ˈɛɹə], \mˈɛʒəmənt ˈɛɹə], \m_ˈɛ_ʒ_ə_m_ə_n_t ˈɛ_ɹ_ə]\
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The quantity's actual value differs from a measured value. A systemic error caused by the measuring instrument's incorrect calibration will not improve by repeating the measurement. A random error caused by the measuring instrument's accuracy limit will improve or reduce by repeating the measurement.
By Henry Campbell Black
