count the number of items in your menus.

$($a$)$ What is the average?

What is the disadvantage of putting all the functions on the screen at once?

What is the problem with using lots of menu headings?

What is the problem of using very few menu headings?

Consider the following: I can group my functions either into three menus, with lots of functions in each one, or into eight menus with fewer in each. Which will be easier to use? Why?

$($b$)$ Optional experiment

Design an experiment to test your answers. Perform the experiment and report on your results.