Math

QuestionA scientist measures 536gm3536 \, \mathrm{g} \, \mathrm{m}^{-3}; true value is 1000gm31000 \, \mathrm{g} \, \mathrm{m}^{-3}. Find absolute and relative error.

Studdy Solution

STEP 1

Assumptions1. The measured value is 536gm3536 \, \mathrm{g} \, \mathrm{m}^{-3} . The true value is 1000gm31000 \, \mathrm{g} \, \mathrm{m}^{-3}

STEP 2

First, we need to find the absolute error. The absolute error is the difference between the measured value and the true value.
AbsoluteError=MeasuredValueTrueValueAbsolute\, Error = |Measured\, Value - True\, Value|

STEP 3

Now, plug in the given values for the measured value and the true value to calculate the absolute error.
AbsoluteError=536gm31000gm3Absolute\, Error = |536 \, \mathrm{g} \, \mathrm{m}^{-3} -1000 \, \mathrm{g} \, \mathrm{m}^{-3}|

STEP 4

Calculate the absolute error.
AbsoluteError=464gm3=464gm3Absolute\, Error = |-464 \, \mathrm{g} \, \mathrm{m}^{-3}| =464 \, \mathrm{g} \, \mathrm{m}^{-3}

STEP 5

Next, we need to find the relative error. The relative error is the absolute error divided by the true value.
RelativeError=AbsoluteErrorTrueValueRelative\, Error = \frac{Absolute\, Error}{True\, Value}

STEP 6

Now, plug in the given values for the absolute error and the true value to calculate the relative error.
RelativeError=464gm31000gm3Relative\, Error = \frac{464 \, \mathrm{g} \, \mathrm{m}^{-3}}{1000 \, \mathrm{g} \, \mathrm{m}^{-3}}

STEP 7

Calculate the relative error.
RelativeError=0.464Relative\, Error =0.464The relative error is usually expressed as a percentage.
RelativeError=0.464×100%=46.4%Relative\, Error =0.464 \times100\% =46.4\%The absolute error of the scientist's measurement is 464gm3464 \, \mathrm{g} \, \mathrm{m}^{-3} and the relative error is 46.4%46.4\%.

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