sponsors and several important stakeholders, and have started to work on the preliminary
scope statement. You’ve documented several key assumptions that have been made, and
identified project constraints and initial risks. Before you can finish the preliminary scope
statement, you must make a rough order of magnitude estimate of both time and cost, so that
the sponsor can allocate the final budget.
What’s the range of a rough order of magnitude (ROM) estimate?
-10% to +10%
-50% to +50%
-50% to +100%
-100% to +200%