The period of oscillation of a simple pendulum in the experiment is recorded as 2.63 s, 2.56 s, 2.42, 2.71 s and 2.80 s respectively. Find the average absolute error.
none of these
ObservationxDifference(Differnce)22.630.010.00012.560.060.00362.420.200.04002.710.090.00812.800.180.0324Avg = 2.624Rounding off to 3 digitsAvg = 2.62
variance is average of|△x|2=∑(△x)25
Standard deviation=√0.0168
= 0.129
Round off = 0.13
Average absolute error = ± 0.13 sec