Units & Measurements: Errors in Measurement MCQ

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Errors in MeasurementEasyQuestion 5012

Question

Which type of measurement variation can have its effect on the mean reduced by averaging repeated independent observations?

A
Systematic error
B
Random error
Correct
C
Gross error
D
Zero error

Correct answer

Random error

Explanation

Independent random variations can partly cancel in an average, reducing uncertainty in the mean. Averaging does not guarantee elimination of random error and does not remove an instrument's systematic zero offset.

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