Design a simple, visually pleasant, JavaScript$-$based $$app$$ that performs a simple statistical analysis on a small set of numbers.

Your program should take three numbers $($each entered into a separate text box$)$ and display on the screen: the maximum, minimum, average $($arithmetic mean$),$ median, and range $($max $-$ min$).$

For example, if the three numbers are $3,5,$ and $13,$ the answers should be: max $=13,$ min $=3,$ mean $=7\mathrm{.}0,$ median $=5,$ and range $=10$

Design the html form for the app $($with three text boxes with the proper labels $+$ a 'Calculate' button $+$ placeholders $($