This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Calculate and interpret schedule performance index
Prompt focus: At the status date, earned value is $135,000 and planned value is $150,000. What is the schedule performance index and its basic interpretation?
Why the correct answer works
0.90; behind the planned rate
SPI = EV / PV = 135 / 150 = 0.90. A value below 1.00 is behind the planned rate; above 1.00 is ahead in earned-value terms.
Why the tempting wrong answer fails
The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.
Plain-language takeaway
Use the rationale to connect the prompt clue, the correct choice, and the tested objective before retaking a similar item.
Simple analogy
Think of calculate and interpret schedule performance index like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.