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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? A. -% to % B. -% to +% C. -% to +% D. -% to %
Answer: AExplanation: A rough order of magnitude (ROM) estimate is an estimate that is very rough. Typically, you should expect a ROM estimate to be anywhere from half (-50%) to twice (+100%) the actual result. That means that if your ROM estimate for a project is 6 months, then you should expect the actual project to be anywhere from 3 months to 12 months. (That's what it means for your estimate to be within an order of magnitude.)
