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The LSSGB exam has 60 questions and runs 1 hour 30 minutes.
These 10 free LSSGB questions are organized by exam domain, so you can see how each part of the Lean Six Sigma Green Belt blueprint is tested. Reveal the answer and explanation under each question.
Customers of an equipment-service company react differently to three features. Accurate invoices receive little praise, but billing errors cause strong dissatisfaction. Shorter promised response times steadily improve satisfaction. An unexpected setup visit delights customers, although its absence causes no complaint. In that order, how does the Kano model classify these features?
Correct answer: A - Basic, performance, excitement
An order passes through sales, credit, planning, and dispatch. Each department reports less than 20 minutes of work per order, yet customers wait six days. Managers cannot explain how departmental release schedules contribute to the queues. Which map would best connect the release decisions, processing times, and waiting periods?
Correct answer: B - A current-state value stream map showing queues, process times, and release signals.
An assembly cell has an eight-hour shift with 50 minutes of planned nonproduction time. Demand is 215 units per shift. Its single test station completes one unit every 2.4 minutes; every other station can complete a unit in less than 2 minutes. Assume no additional losses and enough work to keep the tester supplied. Which assessment correctly links takt time to the capacity problem?
Correct answer: C - Takt is 2.00 minutes per unit; testing cannot meet demand at its current pace.
After two packaging-improvement meetings, every proposal on the board involves buying equipment. Two senior technicians have done most of the talking. Packers later tell the facilitator that they have lower-cost ideas they did not raise. The next meeting needs to generate alternatives before selecting one. How should it be structured?
Correct answer: D - Use silent writing, round-robin collection, clarification, then private ranking of the complete idea list.
While reviewing a proposed scheduling process, a dispatcher says, 'It looks efficient on paper, but urgent jobs will disappear in the queue.' The planner replies that dispatch is simply resisting change. Before debating solutions, which facilitator response would turn the disagreement into something the team can examine?
Correct answer: A - What would happen to an urgent job in the proposed sequence?
Processing times for three invoice-validation methods are measured using independent random samples of comparable invoices. The assumptions for a one-way ANOVA are met. With a significance level of 0.05, the analysis reports p = 0.012. A supervisor proposes adopting the method with the lowest sample mean. What does the ANOVA result itself establish?
Correct answer: C - At least one population mean differs; the differing pairs are not yet identified.
For the past month, an order-fulfillment team records four nonoverlapping failure categories: address corrections, 80 cases at $5 each; missing accessories, 30 cases at $25 each; damaged units, 12 cases at $90 each; and duplicate shipments, 8 cases at $110 each. The listed amounts are the full loss per case. To prioritize the largest total financial loss, which category belongs first on the Pareto chart?
Correct answer: C - Damaged units
A cycle-time trial is running with an interlocked guard bypassed. The machine can cycle while an operator's hands are in the loading area. No injury has occurred, and a manager argues that the failure mode has a low Risk Priority Number because exposure is infrequent. The Green Belt's immediate response should be to:
Correct answer: B - Stop the affected operation and have authorized personnel secure the equipment.
Leaking assemblies initially appear to be a night-shift problem. Follow-up observations use the same component lot and the same verified final-test method. Experienced day-shift operators also produce leaking units when using Fixture B, while night-shift operators produce conforming units on Fixture A. All operators are following the approved sequence. Which hypothesis now deserves priority in the investigation?
Correct answer: B - A difference in fixture condition or setup is contributing to the leaks.
A changeover team moves tool preparation from the machine stoppage to a separate station, where it can be completed safely while the previous product is running. Tool replacement and first-piece verification still occur with the machine stopped. A manager dismisses the change because preparation uses the same number of labor minutes. Which response best explains the benefit?
Correct answer: D - Internal setup has become external setup, reducing downtime without necessarily reducing labor.
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