The depths of snow at a ski resort are collected every year for 12 years
on 31\textsuperscript{st} January. All data is in centimetres.

30, 75, 125, 55, 60, 75, 65, 65, 45, 120, 70, 110.

Calculate the following :

\begin{enumerate}
    \item \nbPointsEnumi{1}The modal depth of snow.
    \item \nbPointsEnumi{1}The mean.
    \item \nbPointsEnumi{1}The median.
    \item \nbPointsEnumi{2}Find the five number summary.
    \item \nbPointsEnumi{2}From this calculate the range and interquartile range.
    \item \nbPointsEnumi{3}Show the data in a box and whisker plot.
\end{enumerate}
