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$$ Z = 23,8937 * 10^{-5} [u] $$ $$ u(Z) = 3,721 * 10^{-7} [u] $$

I have to write this uncertainty in complete form. Would this be correct? $$ 0.0002389 \pm 0.0003721 $$

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    $\begingroup$ What's incomplete about the first version? $\endgroup$ – ACuriousMind Jun 3 at 16:43
  • $\begingroup$ My guess it does not answer some standards, since my teacher made this task. It needs to be done as one statement $\endgroup$ – Murad Davudov Jun 3 at 16:46
  • $\begingroup$ Are you using a comma as a decimal point in the first two lines but a period as a decimal point in the third? If so, that’s confusing. $\endgroup$ – G. Smith Jun 3 at 19:43
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The straight forward way it to round the error to the most significant digit, and keep the measured value to the accuracy of the error, thus the value is $0.0002 \pm 0.0004$.

See Significant figures

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