Part II: Refraction

$(3)$ Complete your drawings; carefully measure all angles; display your results in Table $2($as shown$).$ The values of $n$ must be quoted to the accuracy of three significant digits.

$(4)$ Answer Question #$2$: How accurate do you expect your measured? value of $n(n$ average$)$ to be$?$ Explain your reasoning and state your estimate in $\%.$

$\backslash$table$[[$TABLE $2.$ REFRACTION.$],[$Run #$,{}_1,{}_2,$ni$,\backslash$table$[[$MAXIMUM $\%],[$DEVIATION$],[$IN n$]]],[1,20,12,0],[2,20,12,$:$\text{'}$