A student measures the time period of 100 oscillations of a simple pen – McqOptions

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1.	A student measures the time period of 100 oscillations of a simple pendulum four times. The data set is 90 s, 91 s, 95 s and 92 s. If the minimum division in the measuring clock is 1 s, then the reported mean time should be
A.	\[92\pm 2s\]
B.	\[92\pm 5.0s\]
C.	\[92\pm 1.8s\]
D.	\[92\pm 3s\]
Answer» B. \[92\pm 5.0s\]

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