IASSC Lean Six Sigma – Black Belt v6.1
Question 1
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
Question 2
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
Question 3
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
Question 4
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
Question 5
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
Question 6
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
Question 7
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
Question 8
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
Question 9
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
Question 10
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
Question 11
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
Question 12
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
Question 13
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
Question 14
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
Question 15
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