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Calculate the mean % error in five obser...

Calculate the mean % error in five observations :
`80.0,80.5,81.0,81.5,82`

A

`0.74%`

B

`1.74%`

C

`0.38%`

D

`1.38%`

Text Solution

Verified by Experts

The correct Answer is:
A
Mean of the errors `= (80 + 80.5 + 81+ 81.5 + 82)/(5) = 81`
`|80-81| = 1`
`|8.05-81.5| = 0.5`
`|81-81|=0`
`|81.5-81|= 0.5`
`|82-81| = 1`
Mean error `= (1 + 0. 5 + 0+ 0 .5 + 1)/(5) = 0.6`
% error `= (0.6)/(81) xx 100 = 0.74 %`
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