Free LSSYB sample questions

Correct answer: Motion

The waste of Motion refers to the unnecessary movement of people (e.g., walking, bending, reaching). In this scenario, the staff members walking to get forms is a classic example of wasted motion. Transportation refers to the unnecessary movement of materials or products, not people.

Correct answer: Fishbone (Ishikawa) Diagram

A Fishbone (or Ishikawa) Diagram is specifically designed for root cause analysis. It helps teams visually organize the potential causes of a problem (the effect) into logical categories (like Manpower, Method, Machine, etc.), which facilitates a structured brainstorming session. SIPOC defines process scope, Pareto prioritizes causes by frequency, and Control Charts monitor process stability over time. mindmap root((Problem: Bug Fix Delays)) People Lack of Training Poor Communication Process Complex Approval No Prioritization Tools Slow System Outdated Debugger Environment Noisy Office

Correct answer: False

This statement is false. A device that physically prevents an error from occurring is a 'prevention' or 'control' type of Poka-Yoke, which is the most effective form. A 'detection' type would allow the mistake to happen but would immediately signal an alarm or stop the line to alert the operator.

Correct answer: Internal Failure Cost

Internal Failure Costs are incurred to remedy defects discovered before the product or service is delivered to the customer. Since the incorrect invoices are being re-issued before being sent out, the associated costs (labor, materials) are categorized as internal failure costs. External failure costs occur after the customer receives the product.

Correct answers: The process characteristic being controlled; The reaction plan for an out-of-control condition; The measurement method and frequency

A robust control plan must specify what is being controlled, how it is measured (method and frequency), and what to do if it goes out of control (the reaction plan). The original project champion and the budget from a previous phase are historical data and not active components of the ongoing control plan.

Correct answer: SIPOC Diagram

A SIPOC (Suppliers, Inputs, Process, Outputs, Customers) diagram is a high-level process mapping tool used to define the scope of a process. It perfectly matches the requirements described: identifying the suppliers, inputs, process, outputs, and customers. A Value Stream Map includes data on cycle times and waste, and a detailed flowchart would show much more granularity than needed for this initial high-level view.

Correct answer: Pareto Chart

A Pareto Chart is a bar chart where the values are plotted in descending order of relative frequency, with a cumulative frequency line. Its primary purpose is to apply the Pareto principle (80/20 rule) to highlight the most significant factors in a dataset. This allows the team to focus their efforts on the 'vital few' causes that have the greatest impact.

Correct answer: Median

For skewed data, the median is a more robust measure of central tendency than the mean. The mean is sensitive to extreme values (outliers), so the few very long calls would pull the mean to a higher value that doesn't represent the typical call. The median, being the middle value, is unaffected by these outliers and provides a better picture of the center of the data. graph TD A[Right Skewed Distribution] --> B{Mean > Median > Mode}; B --> C(Mean is pulled by long tail); B --> D(Median is the best measure of center);

Correct answer: Kanban

Kanban is a scheduling system for lean manufacturing that signals when to move or produce items. It operates as a 'pull' system, where downstream processes signal to upstream processes when more materials are needed. This prevents the buildup of excess inventory (a form of waste) and ensures production is based on actual demand.

Correct answer: The measurement device itself has significant variation, but different operators get consistent results with it.

Repeatability is the variation observed when the same operator measures the same part multiple times with the same device. High repeatability indicates that the measurement device (gage) itself is inconsistent. Reproducibility is the variation observed when different operators measure the same part with the same device. Low reproducibility indicates that there is little variation between operators.