Free IASSC Lean Six Sigma - Black Belt Exam Braindumps
IASSC Lean Six Sigma - Black Belt Questions 61–65 (page: 14)

Updated On: 9-Feb-2026

The Normal Distribution is considered to be the most important distribution in statistics and, among other things is defined as having a total area under the curve of 1, is mounded and symmetrical and the Mean, Median and Mode are_____________________.

  1. All evenly divisible by 3
  2. Twice the Standard Deviation
  3. Within 10% of each other
  4. The same number

Answer(s): D



Following process modifications, the Null Hypothesis states that no improvement to the process has occurred. If we discover the Null Hypothesis Test was rejected when it was false that would be a(n)
_____________________.

  1. Alpha Error
  2. Type I Error
  3. Type II Error
  4. Type III Error

Answer(s): C



The class score distribution of schools in a metropolitan area is shown here along with an analysis output. Comment on the statistical significance between the Means of the two distributions. Select the most appropriate statement.

  1. The two class Means are statistically different from each other
  2. The two class Means statistically not different from each other
  3. Inadequate information on class Means to make any statistical conclusions
  4. A visual comparison shows that class Means are not statistically different
  5. A visual comparison shows that class Means are statistically different

Answer(s): A



A_________________ is used primarily to track the stability of the average value of a metric of interest.

  1. NP Chart
  2. Xbar-R Chart
  3. I-MR Chart
  4. C Chart

Answer(s): B



For her injection molding project a Belt needed to track the percentage of defectives of a particular sample set so she used a___________________ to display the data?

  1. Individual Chart
  2. C Chart
  3. Xbar Chart
  4. P Chart

Answer(s): D



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