Lean six sigma green belt

What is the difference between continuous and discrete data?

Continuous - infinite values, Discrete - distinct countable values.

What is the difference between DMAIC and DMADV?

DMAIC focuses on improving existing processes. DMADV focuses on creating new processes.

What is the difference between soft savings and hard savings?

Hard Savings have a direct impact to the “profit and loss statement” where Soft Savings don’t impact a company’s financial statements.

What is the effect of automating a poorly designed process?

Defect levels will stabilize or decrease.

What is the estimated probability of a process to give a result within +/-3 standard deviations from the mean for a normally distributed process?

0.9973

What is the first step in a Kaizen project?

Identify an opportunity (an objective for improvement)

What is the first step of the Measure phase?

Identify the problem statement and goals.

What is the five-phase lean approach?

A systematic method for implementing lean manufacturing that helps improve the production process and sustains gains made in the production cycle in an area or plant. The five phases are: Stability, Continuous Flow, Synchronous Production, Pull System, and Level Production.

What is the goal of the Control phase in DMAIC?

To sustain gains and improvements by controlling the process.

What is the goal of the Improve phase in DMAIC?

To identify, test, and implement solutions to eliminate root causes and reduce defects.

What is the goal of the Measure phase in DMAIC?

To gain an understanding of the current process and determine the scope of the problem through data collection and analysis.

What is the just-in-time philosophy?

Only producing what is needed, when it is needed.

What is the key goal of the Define stage in DMAIC?

To clearly define the problem, improvement activity, opportunity for improvement, goal, and customer requirements.

What is the main difference between First Time Yield (FTY) and Rolled-Throughput Yield (RTY) amount :

RTY applies to the yield from a series of processes as they add up over time where FPY is focused on a single process output.

What is the major difference between Kaizen and Kaizen Blitz?

A Kaizen blitz focuses on correcting one issue, while Kaizen focuses on small changes to improve processes.

What is the mechanism by which the capability of a process is identified?

Creating rational subgroups

What is the purpose of 5S?

Workplace organization method for efficiency and visual control.

What is the purpose of a 5 Whys analysis?

Dig deeper to find the root cause by asking 'why' 5 times.

What is the purpose of a control chart?

To detect special cause variation signaling an out-of-control process. / To analyze process stability and variation over time.

What is the purpose of a control plan?

Documents the activities, tools and process controls needed to sustain improvements.