CLSSBB Certified Lean Six Sigma Black Belt (CLSSBB) Questions and Answers

Typically, which of the following actions is NOT used to reduce process cycle time?

Which of the following is not a Measure of Central Tendency?

If a process follows an exponential distribution with a mean of 25, what is the standard deviation for the process?

Process data being used in the initial setup of a process are assumed to have a normal distribution. If the nominal (target) is set at the center of the distribution, and the specification limits are set at ± 3σ from the center, the Cpkis equal to

In comparison to a full-factorial design of experiment (DOE), a traditional, one-at-a-time approach will

TRIZ is an acronym which refers to:

Which of the following types of variation is LEAST likely to occur in sequential repetitions of a process over a short period of time?

Find the value of (11) in the ANOVA table. Assume:

Which of the following tools is used to identify potential events and contingencies for an implementation plan?

For a line in an FMEA form a team has established the following:

Cost: $82

Severity: 7

Occurrence: 9

Detection: 4

Target date: 7 days

What should the risk priority number (RPN) be for this line:

Calculate the main effect of factor A:

Which of the following statements is true about the theory of constraints?

You are a Project Manager wanting to compare on time delivery (%) of Team Leads across 4 teams, your choice of technique would be?

When the design for assembly is being evaluated, all of the following factors should be considered EXCEPT design for

Which of the following is not one of the Lean R’s?

In a certain sampling situation, ? = 0, ? = 0.08. The power of the sampling plan in this case is:

What is the value of the test statistic?

The following contingency table was developed for an organization.

On the basis of this information, what is the expected number of oil changes for Station 1?

A robust design is one which:

A Black Belt is going to monitor the number of defects on different size samples. Which of the following control charts would be most appropriate?

A set of data from a process has 8 readings per sample and 50 samples. The mean of the 50 sample means is 12.62. The mean of the 50 ranges is 0.18.Find the control limits for a median chart.

In Control chart interpretations, how many business rules (Shewart Rule's) will be used to interpret for stable process?

Which of the following is defined as continuous, incremental improvement?

Which of the following is NOT an advantage of using a median?

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet. Find the approximate probability it is size 3/4.

A sample of size 50 from machine A has a mean of 18.2 and standard deviation 3.1. A sample of size 40 from machine B has mean 17.6 and standard deviation 2.8. Do these data indicate that the population for machine A has a larger mean? Assume the populations are normal.

If DPU = 0.022, the RTU is approximately:

(Refer to the previous problem) To estimate the within treatment variance the experimenters would calculate the variances of:

If the probability that an event will occur is 0.83, then the probability that the event will not occur is:

Find the value of (4) in the ANOVA table. Assume:

Find Cp and Cpk.

The following data were collected on the diameters of turned shafts: 2.506 2.508 2.505 2.505. These values are:

I. Attribute data

II. Discrete data

III. Variables data

IV. Continuous data

Customer requirement #3 has a ______________ relationship with technical feature #3.

A team has been asked to reduce the cycle time for a process. The team decides to collect baseline data. It will do this by:

The operators of a manufacturing cell work out a more orderly arrangement for tool storage and establish a schedule to maintain cleanliness on a daily basis. These improvements are best described by which approach to problem solving?

A quality engineer employed by a hospital is asked to improve the process of medication storage in locked cabinets near patient doors. One defect that occurs rarely is that the medication caddy is left out when the cabinet is relocked. The engineer installs a gravity activated arm that will not permit the door to close when the caddy isn’t inside.

This improvement is best described by which approach to problem solving?

The Toronto plant produces appliances in the following distribution: Type A 23% Type B 42% Type C 35% A random sample of 300 appliances from the Texas plant has the following distribution: Type A 73 Type B 111 Type C 116 Is the distribution of appliances at the Texas plant the same as that at the Toronto plant?

A team working with a plant relocation is tasked with designing a process for moving 180 pieces of equipment. Incoming orders may need to be filled during the move at either the old site or the new one. Transportation equipment availability is uncertain. Construction schedules at the new site is very weather dependent. The team designs a chart that attempts to cover these and other contingencies with appropriate measures dealing with each.

The tool best fitted for this task is:

A team wants a technique for improving consistency of assembly operations. They should use:

The primary metric for a project is reduced cost for process A .A consequential metric could be:

A team wants a technique for displaying the connection between various customer needs and various features on a product. They should use:

A team wants a technique for determining and displaying priorities based on frequency of various defect types. They should use:

The leader in the quality movement who recommended that organizations “eliminate numerical quotas for the work force and numerical goals for management”:

Intuitively, which factor A or B seems most likely to be significant?

This table displays the inventory of fasteners in a storage cabinet. An item is selected at random from the fastener cabinet.

Find the approximate probability it is a 1/2 inch bolt.

Find the value of (8) in the ANOVA table. Assume:

The quality leader responsible for the term Total Quality Management (TQM):

A team’s goal is to improve information flow in a payroll function. They make thirty-three Post-It® notes, each listing an issue for further investigation. After some discussion, they group them into four categories: mandated record keeping, privacy concerns, insurance concerns and transfer concerns.

This grouping process is best described by which approach to problem solving?

A project that lacks a clear definition of its scope and boundaries runs the risk of:

SCENARIO

A Six Sigma team is measuring the moisture content of corn starch as it leaves the conveyer belt of a dryer. They collect one sample four cups of starch at times indicated in the chart at fixed locations labeled A, B, C, and D across the end of the belt. See the diagram below.

After some more work on the dryer, additional data are collected which when plotted looks like this:

Which type of variation dominates?