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2. (25) A student measures the period of a pendulum and obtains the following values: Trial Period (sec.) 1.35 1.34 1.32 1.36
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a) Menn 35+ 1.34 +1.32+ .36 +1.33+ 1.34 41.31 + 135 Mean = 1.345 2 M 2 (xi-x)2 Varrance n-1 0.0018 Variance & 0.0025 measurme

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