Lean Six Sigma Yellow Belt Exam

Lean Six Sigma Yellow Belt Exam Questions and Answers Solutions are implemented in which stage of DMAIC? - Answer-Improve and Control What does DMAIC stand for? - Answer-Define, Measure, Analyze, Improve, Control pareto chart - Answer-categorical x vs categorical y run chart - Answer-continuous y vs time boxplot - Answer-continuous y vs categorical x scatter plot - Answer-continuous y vs continuous x what information does a dotplot provide? - Answer-the spread of the data spaghetti diagrams - Answer-visual representation of the work unit flowing through a process, can show waste of motion and transportation

• steps to complete a spaghetti diagram - Answer-draw a scaled diagram, mark the

area of focus, walk the process, and document travel time and distance fishbone diagram - Answer-identify potential causes and document them into categories steps to make a fishbone diagram - Answer-select the effect, create the body, label the categories, and define the potential causes in each category manufacturing fishbone categories (traditional) - Answer-personnel, materials, measurement, method, machine, and environment CTQ - Answer-Critical to Quality; factors that are recognized to be critical to customer satisfaction What is a C&E matrix? - Answer-a tool that can be used to determine which inputs on our are actually "most likely" suspects. Looks at the "X" (or inputs) that are discovered to be most important.Primary benefit of a C&E matrix? - Answer-allows for the numerical quantification of the relationship between the inputs and outputs of a process Steps to create a C&E matrix - Answer-list the outputs, rank the outputs, identify the process steps and inputs, rank the contribution, and prioritize the critical items 1 / 2

FMEA (Failure Mode and Effects Analysis) - Answer-detailed, quantitative method of analyzing and documenting the failure modes of a process, dynamic, needs to be continually updated; primary purpose is to diagnose and prevent risks system FMEA - Answer-top level, early stage analysis design FMEA - Answer-analyzes the systems, subsystems, parts, and components of a product early in the design stage process FMEA - Answer-focuses on: process flow, sequence, equipment, tooling gages, inputs, outputs, and set points for each failure mode (most common) potential failure mode - Answer-ways that a process could fail to meet the process requirements or design intent potential failure effects - Answer-the consequences of the potential failure mode on the customer current process controls - Answer-the existing controls and procedures that can prevent or detect the failure mode SEV (severity) column - Answer-an estimate of how severely the effect will impact the customer OCC (occurrence) column - Answer-likelihood that a cause will occur and will result in the failure mode DET (detection) column - Answer-likelihood that control will detect teh failure RPN (risk priority number) - Answer-(multiply SEV, OCC, and DET) ranks the priority of each failure effects SPC (statistical process control) - Answer-The application of statistical techniques to monitor and adjust an operation (used in control phase of DMAIC)

• types of waste - Answer-(WORMPIIT) waiting, overproduction, rework, motion,

processing, inventory, intellect, and transportation

• principles of lean - Answer-value, value stream, flow, pull, strive for perfection

TAKT time - Answer-understanding and responding to customer demand at a 6 sigma level of quality, how many defects occur out of a million? - Answer-3.4

• sources of variation - Answer-Internal processes (always targeted first), design, and

raw materials

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