Given :
Actual value observed , [tex]v_a=1.92\ g/ml[/tex].
Expected value , [tex]v_e=1.89\ g/ml[/tex].
To Find :
The student's percent error.
Solution :
Percentage error is given by :
[tex]P=|\dfrac{v_a-v_e}{v_e}|\times 100\ \%[/tex]
Putting given values in above equation, we get :
[tex]P=|\dfrac{1.92-1.89}{1.89}|\times 100\ \%\\\\P=1.587\ \%[/tex]
Therefore, percentage error is 1.587 %.
Hence, this is the required solution.
