Without Doing Any Computations, Which of the Following Distributions Has

Essay

Without doing any computations, which of the following distributions has the largest variance?
$\begin{array}{cccccc}\hline X & f & Y & f & Z & f \\\hline 30 & 3 & 41 & 2 & 45 & 3 \\36 & 2 & 42 & 4 & 46 & 1 \\40 & 3 & 44 & 2 & 48 & 1 \\41 & 2 & 45 & 4 & 51 & 3 \\48 & 2 & 51 & 2 & 53 & 3 \\50 & 3 & 52 & 2 & 55 & 3 \\52 & 2 & 53 & 2 & 59 & 3 \\60 & 3 & 54 & 2 & 60 & 3 \\\hline\end{array}$