Please answer question 1 after reading the following: Does drinking coffee increase worker's productivity?

Please answer question 1 after reading the following:

Does drinking coffee increase worker's productivity? In an effort to affordably boost productivity, the Gym Company has started providing free unlimited gourmet coffee to all employees. The manager will track the weekly total productivity (units produced) of each employee before and after the coffee machine is installed.

1.    Write the following information for each variable:

a.     Variable name and definition

b.    Variable type