Ans: B
I is false. The height of the tallest student is $185\mbox{ cm}$.
I is false. The height of the tallest student is $185\mbox{ cm}$.
II is true. The inter-quartile range
$\begin{array}{cl}
= & 180 – 165 \\
= & 15 \mbox{ cm}
\end{array}$
III is false. Since the median is $175\mbox{ cm}$, then half of the students are taller than $175\mbox{ cm}$.