The given data is the mark obtained by 25 students in a class test . $74,64,70,31,41,53,61,64,70,56,28,88,53,56,31,53,64,56,32,53,56,61,53,74,33$ Find the mean marks ?

Question

$\begin{array}{1 1} 50 \\ 55 \\ 58 \\ 74 \end{array} $