In an experiment, the period of oscillation of a simple pendulum was observed to be 2.63 s, 2.56 s, 2.42 s, 2.71 s and 2.80 s. The mean absolute error is
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A
The mean period of oscillations of the determinations of significant figures.
(Rounded off to two decimal places
The absolute errors in the measurement are
Means absolute error is
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