Question

in an experiment ,the refractive index of glass was observed to be calculate1) mean value of refractive index mean obsolete error 2)mean obsolete error 3) fractional error [3%]5) express rrsution prepare from[1.5±0.4]
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Answer 1

mean=1.51 (ii) MAE=(.06+.05+.03+.07+.03+.02)/6=.04. (iii) FE=0.04/1.51. (iv) %E=4/1.51℅