IASSC Lean Six Sigma – Black Belt v6.1

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When we gather information for the Voice of the Business we are primarily interested in information concerning the _____________ of the business.

  • A. Advertising budget
  • B. Market share
  • C. Profitability
  • D. Ownership


Answer : C

The relationship between a response variable and one or more independent variables is investigated and modeled by use of __________________.

  • A. X-Y Matrix
  • B. Baldridge Assessment
  • C. Analysis of Variance (ANOVA)
  • D. Critical X's Definition


Answer : C

When doing Hypothesis Testing on Non-normal data Belts will use a ________________ to compare more than two sample proportions to each other.

  • A. Z score Table
  • B. Sakami Table
  • C. Mean-to-Mode Analysis
  • D. Contingency Table


Answer : C

The distance between the Mean of a data set and the Point of Inflection on a Normal curve is called the _______________.

  • A. Curve Spread
  • B. Standard Deviation
  • C. Numerical Average
  • D. Data Breadth


Answer : B

Which statement(s) are incorrect about Fractional Factorial Designs?

  • A. A Half Fractional Design for 5 factors has the same number of experimental runs as a Full Factorial Design for 4 factors assuming no repeats or replicates or Center Points
  • B. Quarter Fractional experiments can exist for those with 4 factors
  • C. Resolution V design is desired while controlling costs of experimentation
  • D. Half Fractional experiments do not exist for those designs with only 2 factors


Answer : C

As a means of measuring the effects on other areas of a process as a result of changes in the primary metric we also define and track ________________.

  • A. Parallel process metrics
  • B. Secondary metrics
  • C. Tertiary metrics
  • D. Industry standards


Answer : B

Kanban establishes a means of monitoring production, conveyance and delivery information such that efficient flow is established. The method used by Kanban is to require a _________ before anything moves.

  • A. Sign-off
  • B. Signal
  • C. Bell to ring
  • D. Work order


Answer : B

For the data set shown here which of these statements is/are true?


  • A. Hypothesis Testing of Means or Medians cannot be done since there are an unequal number of observations for the 3 samples
  • B. A Paired T-test would be applicable for comparing Grade B and Grade A since they follow each other in the data set
  • C. Grade A has the lowest sample Mean of the 3 samples
  • D. Grade A has a higher sample Mean than Grade B


Answer : C

One of the foundations of Lean Six Sigma is the concept that the output of a process (Y) is influenced by the process inputs (Xs) and is commonly shown as which formula?

  • A. Y = Z(X2)
  • B. Y = f(X3)
  • C. Y = f(Xn)
  • D. Y = g(X+ 1.5)


Answer : C

One of the primary deliverables from performing a SIPOC is to begin to understand which inputs have the greatest affect on the ______________ outputs.

  • A. Management’s desired
  • B. Supplier delivered
  • C. Process operator
  • D. Customer most valued


Answer : D

A valid Multiple Linear Regression (MLR) is characterized by all of these except
_______________________.

  • A. It is an assumption that the X’s (inputs) are not correlated to each other
  • B. The X’s (inputs) are assumed to be independent of each other
  • C. MLR is conducted based on a deliberate form of experimentation
  • D. The Residuals from MLR analysis have to be Normally Distributed


Answer : C

When one speaks of 20% of something contributing 80% of the affect they are referring to what is known as the _________________.

  • A. Shewhart Example
  • B. Connection Principle
  • C. Balance Equation
  • D. Pareto Principle


Answer : D

All the data points that represent the total set of information of interest is called the
________________ .

  • A. Population
  • B. Sample
  • C. Frame
  • D. Spread


Answer : A

A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belts effort requiring that the average cost of an internal critical raw material component be less than or equal to $3,800 in order to stay within budget. Using a sample of 38 first article components, a Mean of the new product upgrade price of $3,680, and a
Standard Deviation of $120 was estimated. In order to increase the Long Term Z value to
5, what is the maximum long term variation in pricing the Belt can accept for his upgraded critical raw material component?

  • A. $6
  • B. $12
  • C. $24
  • D. $48


Answer : C

The most appropriate type of FMEA for a product before going into manufacturing is a

  • A. Design
  • B. Consumer
  • C. Survey
  • D. Test Process


Answer : A

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