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Meaning of Index Numbers

The error in ...

Question

The error in two readings of A are 0.01 and -0.03, then mean absolute error is ?

- 0.004

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0.002

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- 0.02

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0.02

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Solution

The correct option is D
0.02

The absolute value of the errors is taken.

So mean absolute error = (0.01 + 0.03) / 2 = 0.02

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