Lean Six Sigma Green Belt Certification Improve Phase and Solutions 4

Question 1

What does 'takt time' represent in a lean production environment?

Accepted Answer

The available production time divided by customer demand rate

Answer

Takt time = available production time ÷ customer demand rate, setting the rhythm at which products must be completed to meet demand.

Question 2

In a DOE, a 'main effect' refers to:

Accepted Answer

The average change in the response caused by changing one factor from low to high

Answer

A main effect is the average change in the response variable when a single factor moves from its low level to its high level, averaged across all levels of other factors.

Question 3

Which lean concept describes the continuous flow of a single unit through a process without batching?

Accepted Answer

One-piece flow

Answer

One-piece flow moves individual units through each process step immediately, eliminating batching and reducing WIP and lead time.

Question 4

A team is choosing between two solutions. Solution A has a high impact but high risk; Solution B has moderate impact and low risk. Which tool helps formally evaluate this trade-off?

Accepted Answer

Risk-benefit matrix

Answer

A risk-benefit (or impact-effort) matrix plots solutions by their risk/cost versus their expected benefit to support structured decision-making.

Question 5

In a simulation model used for process improvement, 'Monte Carlo simulation' is useful for:

Accepted Answer

Estimating the distribution of outcomes by randomly sampling input variables

Answer

Monte Carlo simulation repeatedly samples from input probability distributions to generate a distribution of possible output values, modeling process uncertainty.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Improve Phase and Solutions 4