[填空题]
A student measures a length five times. Alvcc/aat pn. 1, 3 k6mnec;lx, gx*p1yil of the measurements liel tkpr;gxn9i*9i *b :a 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