Question

in workshop a work measure length of steel plate with variance in having less 0.01 CM our search for such measurement of the length of the following 3.13 3.31 3.47 find the mean then observed and observe the percentage error in measured value of the length​

Answer 1

Answer:

3.13 cm 0.01 cm 1.3%

EXPLANATION:

To get the mean length we usually add the values given then we divide them by the number of values given

Like in this case we have four values therefore

We add them then we divide by four

3.11 + 3.13 + 3.14 + 3.14 =12.52 cm

We then divide it by four

12.52 cm÷4 = 3.13cm

The mean absolute error is 0.01cm because it is the leat count

To calculate percentage error we first find the relative error

0.01÷3.13 = 0.031 cm

We then multiply the absolute error by 100 %

0.031 cm × 100 % = 3.1 %

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