ICBB IASSC Lean Six Sigma – Black Belt Questions and Answers

Situations where standardized work needs to be incorporated include all of these except _____________________.

To properly analyze the variables impacting the output of a process we need to collect data that represents at least 80% of the variation in the process and assure ourselves we are collecting data from all three types of variation which are _______________.

Using this partial Z Table, how many units from a month’s production run are expected to not satisfy customer requirements for the following process?

Upper specification limit: 8.4 Lower specification limit: 4.7 Mean of the process: 6.2 Standard Deviation: 2.2 Monthly production: 360 units

Which one of the listed tools is frequently used to help drill down to possible causes once a Fishbone Diagram is constructed?

Which of these is not a primary cause for Non-normal Data?

Two of the key deliverables for the Measure Phase are a robust description of the process and its flow and an assessment of the Measurement System.

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 Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $2,800 in order to stay within budget. Using a sample of 55 first article components, a Mean of the new product upgrade price of $2,240 and a Standard Deviation of $120 was estimated. Based on the data provided, the Z value for the data assuming a Normal Distribution is?

“A calculated time frame that matches customer demand” is a definition of what Lean Principles term?

A Lean Six Sigma project is attempting to reduce inventory days. The Process Capability will be monitored as part of the Control Phase to track the sustainability of the improvement.

Which distribution type is best used for performing the Capability Analysis?

Contingency Tables are used to test for association, or dependency, between two or more classifications.

Statistical Difference is the magnitude of difference or change required to distinguish between a true difference, brought about by change or improvement, and one that could have occurred by chance.

Calculate the Rolled Throughput Yield of this process using this data.

DatA. unit input: 1450, unit output: 1390, defects repaireD. 320, scrap: 60

The Lean toolbox includes all of the following items except __________.

When a Belt conducts a Linear Correlation Analysis and finds that as an X increases the Y also increase then he has proven a ______________ correlation.

On a _________________ one can see a pattern from the graphed points such that conclusions can be drawn about the largest family of Variation.

The Waste of Overproduction is defined as ______________________.

Which of these graphs demonstrates conditions which would be sufficient to enable OCAP for the process? 

A fundamental rule is that both Standard Deviation and Variance can be added.

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

Sally bought a blender from her local appliance store. When she changed blades the blender would not function. For the manufacturer this would be categorized as what type of cost?

Review the analysis shown here. Which statements are true about the process? (Note: There are 3 correct answers).

Which item(s) listed would impact the Process Capability for a process with a continuous output? (Note: There are 4 correct answers).

If a Belt needed to model the data for the number of weaves in section of carpet fabric she would use the _____________ Distribution approach.

Which Element of Waste best describes "the unnecessary movement of materials and goods"?

Of the various types of data shown which is NOT representative of Variable Data.

From the variance F-test shown above, which of these conclusions is/are valid?

Accuracy can be assessed in several ways and a fairly accurate means of measurement is visual comparison.

Time is always the metric on the horizontal scale of a(n) ___________ Chart.

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.

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

When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

A Belt has determined that the inventory of repair parts at a rework station can be reduced by 45%. According to Cost of Poor Quality (COPQ) definitions inventory reduction would be considered _______________.

Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

A valuable tool to use during the Measure Phase to show material and information flow throughout an entire process is the ______________ .

Which statement(s) are correct about the DOE Factorial plot output here? (Note: There are 3 correct answers).

Which Experimental Design typically is most associated with the fewest number of input variables or factors in the design?

Which one of these tools is frequently used to help drill down to possible causes once a Fishbone Diagram is constructed?

The validity of the decision made with Hypothesis Testing is dependent upon all of these except ___________________.

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?

Following the completion of a LSS project the Belt not only creates a Control Plan he also develops a _____________ so those involved in the process know what to do when the critical metrics move out of spec.

From this list select the best example of Bias in Sampling.

Situations where standardized work needs to be incorporated include all of these except _____________________.