CPS Analysis & Optimization 2

Question 1

A process analyst observes that cycle time varies widely between shifts despite identical procedures. Which analysis technique best identifies the root cause?

Accepted Answer

Multi-vari study

Answer

A multi-vari study isolates sources of variation across time, units, and within-unit factors to pinpoint where variability originates.

Question 2

When performing a value stream map, which metric directly measures the ratio of value-added time to total lead time?

Accepted Answer

Process cycle efficiency

Answer

Process cycle efficiency (PCE) equals value-added time divided by total lead time, revealing waste proportion in the flow.

Question 3

A team wants to reduce defects but has limited resources. Which approach ensures effort targets the highest-impact defect categories first?

Accepted Answer

Pareto analysis

Answer

Pareto analysis applies the 80/20 rule to rank defect categories by frequency or cost, directing resources to the vital few causes.

Question 4

In regression analysis for process optimization, what does an R² value of 0.92 indicate?

Accepted Answer

The model explains 92% of the variation in the output

Answer

R² represents the coefficient of determination, indicating what proportion of output variance is explained by the regression model.

Question 5

Which lean concept specifically targets eliminating wait time between consecutive process steps?

Accepted Answer

Single-piece flow

Answer

Single-piece flow moves one unit at a time between steps, eliminating batch queuing and the waiting waste it creates.

(CPS) Certified Process Specialist Practice Test

(CPS) Certified Process Specialist Practice Test

CPS Analysis & Optimization 2