CLSSBB Practice Exam Questions with Answers Certified Lean Six Sigma Black Belt (CLSSBB) Certification

Which of the following is a component of a visual factory?

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:

The test statistic is approximately:

The temperature in a storage location is logged once every 30 minutes. The control chart that is appropriate for displaying these values is:

The statistics that summarize a population are referred to as?

A black belt plans to test the performance of workers before and after training. Which of the following hypothesis tests should be used to determine whether the training actually improved the workers’ performance?

An observation above upper control limit is concluded as?

Which of the following charts plots the mean of a set of values and recalculates the mean with each new value?

One characteristic of attributes data is that it is always

Typically, which of the following activities is done earliest in the formation of a project team?

A principle disadvantage of fractional factorial experimental designs is:

Is this a left-tail, right-tail or two-tail test?

Which of the following terms is used to describe the risk of a type I error in a hypothesis test?

A store uses signs at specific points in its storage area to indicate when products need to be ordered. This practice is an example of

This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 4?

The formula for reliability during constant failure rate conditions is: Use this formula to find the reliability of a product at 800 hours if MTBF = 600 hours.

A frequent cause of system sub optimization is:

In measurement system analysis, which of the following pairs of data measures is used to determine total variance?

If it is desirable to maximize the response R, the following levels should be used:

TRIZ is an acronym which refers to:

One of the most popular measures of variability in a data set or population is ______________.

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

SWOT is an acronym for:

If the probability that event A occurs is 0.51, the probability that event B occurs is 0.64 and events A and B are statistically independent then:

Perform a risk analysis to determine the expected profit or (loss) from a project which has four possible disjoint outcomes:

Outcome A shows a profit of $340,000 and has a probability of 0.25.

Outcome B shows a profit of $120,000 and has a probability of 0.40.

Outcome C shows a loss of $40,000 and has a probability of 0.10.

Outcome D shows a profit of $100,000 and has a probability of 0.25.

The quality leader most associated with the concept of robustness:

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

An engineer wants to try two hardening ovens to see whether they have different hardness scores. She cuts 8 pieces of bar stock in half, putting half of each in oven A and the other half in oven B. The following data are collected:

Do the data indicate that the ovens have different average scores? Assume differences are normally distributed.

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?

P(A) = .42, P(B) = .58, P(A&B) = .10. Are A and B (statistically) independent?

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

A population of size 1,000,000 has mean 42 and standard deviation 6. Sixty random samples, each of size 15 are selected. According to the Central Limit Theorem the distribution of the sixty sample means has a mean of approximately:

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

Deming called the technique of studying a sample to gain understanding of the distribution of a population an “enumerative study.” His main objection to these studies was:

The principle disadvantage of fractional factorial experiments is that:

George is an employee of Black, Inc. John is George’s internal customer. Which statement is true?

If the probability that event A occurs is 0.51, the probability that event B occurs is 0.64 and that probability that both A and B occur is 0.23 then:

Find the value of (9) in the ANOVA table. Assume:

A higher resolution number for an experimental design indicates that:

P(A) = .42, P(B) = .58, P(A&B) = .10. Find P(A or B).

In a resolution III fractional factorial experimental design, main effects are confounded with:

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

This experimental design is an example of:

Calculate the interaction effect.

A random sample of 2500 printed brochures is found to have a total of three ink splotches. The rate of ink splotches in PPM is:

This table displays the inventory of fasteners in a storage cabinet. A bolt is selected at random from the fastener cabinet. Find the approximate probability it is size 7/8.

In a series of linked processes and associated feedback loops the product or service flows ________ and the information flows ________.

If DPU = 0.022, the RTU is approximately: