The five successive measurements of the thickness of the glass plate using a screw guage are 1.56 mm, 1.55 mm, 1.54 mm, 1.57 mm and 1.53 mm. (i)Evaluate (5 marks) a) The mean value of the thickness b) The absolute error in each measurement c) The mean absolute error d) The relative error e) The percentage error (ii)Find the mean value of the thickness rounded off to two significant digits.
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