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The period of oscillation of a simple pendulum in the experiment is recorded as 2.6s, 2.5s, 2.4s, 2.7s and 2.8s respectively. The average absolute error is
A
0.1 s
B
0.12 s
C
0.01 s
D
1.0 s
Explanation
Average value = (2.6 + 2.5 + 2.4 + 2.7 + 2.8)/5 = 2.6 s |ΔT₁| = 2.6 − 2.6 = 0 |ΔT₂| = 2.6 − 2.5 = 0.1 |ΔT₃| = 2.6 − 2.4 = 0.2 |ΔT₄| = 2.7 − 2.6 = 0.1 |ΔT₅| = 2.8 − 2.6 = 0.2 Mean absolute error = (0 + 0.1 + 0.2 + 0.1 + 0.2)/5 = 0.12 s
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