CPS Advanced Techniques & Methods 4

Question 1

Which simulation technique uses random sampling from probability distributions to model process uncertainty?

Accepted Answer

Monte Carlo simulation

Answer

Monte Carlo simulation generates thousands of random scenarios by sampling input distributions to estimate the range and probability of process outcomes.

Question 2

In a Response Surface Methodology (RSM) study, what is the purpose of a 'center point'?

Accepted Answer

To estimate the curvature of the response surface and check for pure error

Answer

Center points allow estimation of lack of fit (curvature) in the model and provide an independent estimate of pure experimental error.

Question 3

What is the primary objective of 'robust design' as pioneered by Genichi Taguchi?

Accepted Answer

Making the product or process performance insensitive to noise factors

Answer

Taguchi's robust design aims to optimize the signal-to-noise ratio so that output is minimally affected by uncontrollable variation sources.

Question 4

In lean methodology, what does 'mura' refer to?

Accepted Answer

Unevenness or irregularity in production flow

Answer

Mura describes unevenness in production demand or workflow, which leads to muda (waste) and muri (overburden) downstream.

Question 5

When performing a time-series analysis on process data, what does a significant autocorrelation at lag 1 suggest?

Accepted Answer

Consecutive observations are correlated, violating independence assumptions

Answer

Significant lag-1 autocorrelation means each data point is correlated with the previous one, which violates the independence assumption of standard control charts.

(CPS) Certified Process Specialist Practice Test

(CPS) Certified Process Specialist Practice Test

CPS Advanced Techniques & Methods 4