The first quartile of the data set represented by the box plot is . The median of the data set is .

Careers they can suggest include cashiers, hand laborers, janitors, office clerks, customer service representatives, waiters, retail salespeople etc.

Step-by-step explanation:

Firstly, we begin by defining who 'Average Joe' is. Average Joe is a name or nomenclature used in North America to refer to a person who is considered to be ordinary. They are so called because they are 'average', there is nothing about them that is exceptional (no exceptional abilities, attributes, characteristics etc.)

Secondly, there are many a career with lots of openings. As a matter of fact, majority of these openings have their minimum qualification to be a high school diploma or its equivalent. Furthermore, employers usually provide on-the-job training for such openings to cater for any inadequacy on the part of the employee. Such openings include but are not restricted to cashiers, hand laborers, janitors, office clerks, customer service representatives, waiters, retail salespeople etc. These amongst many other such openings can be suggested to him. He can choose from among these choices or other ones not captured here