[填空题]
A student measures a length five times. All o rwbns-b* ic+)z;t k0av:o9((2gxwdo*z lq l qf the measur w*r(5,mcvie eements lie between $18.8 \mathrm{~cm}$ and $19.2 \mathrm{~cm}$. What should the student quote as the absolute uncertainty in the length? The absolute uncertainty is $cm$ (please only input numerical value without units and without the $\pm$ symbol.)
Post time 2024-8-21 21:38:19