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CBSE Class 11-science Answered

The length of road as measured in experiment was found to be 2.48, 2.46, 2.49, 2.50 and 2.48 metre find the mean absolute error relative error and percentage error
Asked by shyambobade2018 | 08 Sep, 2019, 09:17: AM
answered-by-expert Expert Answer
mean = (2.48 + 2.46 + 2.49 + 2.50 + 2.48)/5  = 2.482 m
 
magnitude of absolute error  in 2.48 m = 0.002 m
magnitude of absolute error  in 2.46 m = 0.022 m
magnitude of absolute error  in 2.49 m = 0.008 m
magnitude of absolute error  in 2.50 m = 0.018 m
magnitude of absolute error  in 2.48 m = 0.002 m
 
mean absolute error = (0.002+0.022+0.008+0.0018+0.002)/5 = 0.0104 m
 
relative error = 0.0104/2.482 = 0.004
 
percentage error = 0.004×100 = 0.4 %
Answered by Thiyagarajan K | 08 Sep, 2019, 10:19: AM
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