How Many Minutes of Television Do Children Watch at Home

Short Answer

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below
$\begin{array}{llcc} \hline \text {Minutes on } & \\ \text { TV } &\\\hline 55 \\80 \\75 \\90 \\120 \\40 \\30 \\20 \\60 \\40 \\50 \\120 \\80 \\50 \\60 \\40 \\40 \\50 \\70 \\40 \\\hline\end{array}$
What is the mode?