FREE Lean Six Sigma Black Belt Certification Prep Questions and Answers

Question 1

How is Total Process Variation (t) expressed in terms of Gage (m) and Part (p) Variation?

Accepted Answer

Squareroot of (ơm squared+ ơp squared)

Answer

(ơm + ơp)/2

Answer

(ơm + ơp)/2

Answer

((ơm + ơp) * 2)1/2

Question 2

In terms of Repeatability(?r) and Reproducibility(?o) variation, what is Gage Variation(?m)?

Accepted Answer

(ơr squared+ ơo squared)1/2

Answer

(ơr + ơo)

Answer

((ơr + ơo)/2))1/2

Answer

(ơr + ơo)/2

Question 3

What GRR percentage must be exceeded before the gage needs to be replaced?

Accepted Answer

0.3

Answer

0.4

Answer

0.25

Answer

0.35

Question 4

What guidelines should you follow while choosing a sample?

Accepted Answer

Determine sample size using a formula and base it on the tolerance and confidence interval expected and standard deviation or the current error rate of the population

Answer

10% of the total

Answer

One sample every hour

Answer

Any sample size, if randomly selected, can be suitable for analysis. Since it is sampling, it is not expected to have a specific number of samples.

Question 5

Who is the process expert who rates the samples as acceptable, unacceptable, defective, etc.?

Accepted Answer

Master Appraiser

Answer

Process Appraiser

Answer

Master Champion

Answer

Process Champion

Question 6

SPC stands for?

Accepted Answer

Statistical Process Control

Answer

Statistical Process Chart

Answer

Standard Process Chart

Answer

Standard Process Control

Question 7

SEM stands for?

Accepted Answer

Standard Error of Mean

Answer

Standard Error of Mode

Answer

Standard Estimation of Mean

Answer

Standard Estimation of Mode

Question 8

Which of the following is not a continuous data capability index?

Accepted Answer

Process Performance

Answer

Process Capability

Answer

Process Performance Index

Answer

Process Capability Index

Question 9

What is the equation used to determine Process Capability?

Accepted Answer

(USL-LSL)/(6 * ơ)

Answer

(USL+LSL)/(6 * ơ)

Answer

(USL+LSL)/(ơ)

Answer

(USL+LSL)/(2*ơ)

Question 10

Once you know the values for Cpl and CPU, how do you calculate Process Capability Index (Cpk)?

Accepted Answer

min (Cpl, Cpu)

Answer

max (Cpl, Cpu)

Answer

stddev (Cpl, Cpu)

Answer

avg (Cpl, Cpu)