56 Requirements Engineering for Software and Systems
Survey questions of any type can be used. For example, questions can be closed-
(e.g., multiple choice, true-false) or open-ended—involving free-form responses.
Closed questions have the advantage of easier coding for analysis, and they help to
bound the scope of the system. Open questions allow for more freedom and inno-
vation, but can be harder to analyze and can encourage scope creep.
For example, some possible survey questions for the pet store POS system are
How many unique products (SKUs) do you carry in your inventory? ◾
a) 0-1000 b) 1001-10,000 c) 10,001-100,000 d) >100,000
How many different warehouse sites do you have? ____ ◾
How many different store locations do you have? ____ ...