Tag: Lean Six Sigma Black Belt Exam

OPTIONS 1.2 1.33 1.6 2 ANSWER 1.33 EXPLANATION Using standard formula (USL-LSL)/6 * Sigma, the answer is 1.33.

OPTIONS Can’t say 1 Slightly less than 1 Slightly more than 1 ANSWER 1 EXPLANATION With the assumptions given, Cpk is equal to Cp thus 1 is correct.

OPTIONS Is the dispersion stableIs the mean shiftingIs the normal distribution shiftingDoes the process exhibit special variability ANSWER Does the process exhibit special variability EXPLANATION A Black Belt cannot calculate capability without knowing if the process is free from special causes or not, so THE...

OPTIONS Process needs to follow a normal fit for data Process needs to have two specification limits Process needs to have at least one specification limit Process needs to be stable ANSWER Process needs to follow a normal fit for data EXPLANATION While a lot...

OPTIONS Most variations in a product resulting in defects are due to Special Causes Variability in a process is due to Common and Special Causes In the short term, one should focus on reducing Common Causes Special Causes result in a process to go unstable...

OPTIONS A stable process is controlled An unstable process is not in control A stable process doesn’t have Special Causes of Variation, mostly A stable process is capable ANSWER A stable process is capable EXPLANATION you cannot definitively say that a stable process is capable...

OPTIONS 4 2 2/Square root (33) Cannot determine ANSWER 2/Square root (33) EXPLANATION By applying standard CLT Clauses.

OPTIONS Special Causes are present There is no variation whatsoever Common causes are present Some times, structural variation are present. ANSWER Special Causes are present EXPLANATION Other options are not serious considerations. When a process is not in control, it is because of special causes...

OPTIONS ReliableDurablePredictable outputRepeatable output ANSWER Predictable output EXPLANATION Stability is often referred to as a state when process produces consistent and predictable output, so Predictable output is the correct answer.

OPTIONS Discrimination is not adequate Gage needs replacement Operators need to be trained Discrimination is adequate ANSWER Discrimination is not adequate EXPLANATION NDC < 5 means the measurement system in the gage study is unable to differentiate between different measurements accurately, thus the discrimination is...