A student measures the time period of 100 oscillations of a simple pendulum four times. The data set is 90s, 91s, 95s and 92s. If the minimum division in the measuring clock is 1s, then the reported mean time should be:
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Reported mean time is average of time given..
i.e. (90+91+95+92)/4
=368/4=92s
i.e. (90+91+95+92)/4
=368/4=92s
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