A reference mass of 50.00 Kg is weighted using a digital balance with 1% accuracy. The measurement is repeated 5 times to give 50.0; 50.1; 50.1; 50.2 and 50.2 Kg; with a mean value of 50,12 Kg and S.D.= 0,084 Kg. The balance has a 4 digit display with one decimal point. Calculate the bias, the precision and the measurement uncertainty.

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Estimate of calculation