Solve the Problem

Essay

Solve the problem.
-The ages of 30 students selected randomly from one college are as follows: $$\begin{array} { | l l l l l | } \hline 21 & 23 & 20 & 24 & 20 \\19 & 20 & 19 & 22 & 32 \\20 & 24 & 26 & 21 & 37 \\23 & 18 & 34 & 25 & 30 \\22 & 24 & 23 & 19 & 28 \\20 & 29 & 21 & 35 & 25 \\20 & 21 & 28 & 22 & 32 \\\hline\end{array}$$