Numerical - Range of error for given set of current measurement

Q.  Four observers recorded a set of current measurement as:

125.09 mA, 125.21 mA, 125.05 mA, 125.14 mA.

The range or span of error will be
- Published on 04 Nov 15

a. ± 0.02 mA
b. ± 0.06 mA
c. ± 0.08 mA
d. ± 1.02 mA

ANSWER: ± 0.08 mA

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