InterviewSolution
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InterviewSolution
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The values of measurement of a physical quantity in five trails were found to be ` 1.51 , 1.53 , 1.53, 1.52 , and 1.54`.A. Average absolute error is `0.01`.B. Relative error is `0.01.`C. Percentage error is `0.01%`.D. Percentage error is `1%`. |
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Answer» Correct Answer - A::B::D Mean value ` = ( 1.51 + 1.53 + 1.53 + 1.52 + 1.54)/(5) = 1.53` Absolute errors are `( 1.53 - 1.51 = 0.02)`, `( 1.53 - 1.53 = 0.00) , ( 1.53 - 1.53) = 0.00)`, `( 1.53 - 1.52 = 0.01 ) and ( 1.54 - 1.53 = 0.01)` Mean absolute error is `( 0.02 + 0.00 + 0.00 + 0.01 + 0.01)/(5) = ( 0.04)/( 5) = 0.008 ~~ 0.01` So choice (a) is correct. Relative error ` = ( 0.01)/( 1.53) = 0.00653 ~~ 0.01 % error = (0.01)/( 1.53) xx 100 ` ` = 1%` |
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