CLSSBB Practice Exam Questions and Answers

Which of the following is the best technique for improving the precision of a designed experiment when the experimental material is NOT homogeneous?

Which of the following measures is used to show the ratio of defects to units?

Following have been exponents of Quality evolution except?

__________________can be measured against a benchmark in a process.

Which of the following tools is used extensively in quality function deployment (QFD)?

The term used to describe the risk of a Type I error in a test of hypotheses is?

Find the value of m or b1:

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

The purpose of using control charts is to

A meeting is called for all three shifts to determine the settings to be used on machine #45. This is an example of:

Mathematically, the LEAST informative of the four measurement scales is

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.A customer requires that SPC charts be done on their forms which have spaces for only 5 readings per sample. What should be the UCL and LCL for the new averages chart?

A newspaper article describes a high positive correlation between obesity and orange juice consumption among six-year-olds. Parents who restrict the use of orange juice for their children have:

Which of the following techniques is NOT effective when a team leader is giving feedback to the team?

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

Which one of the following is not a Process Improvement Methodology?

Which of the following tools has the highest resolution?

Which of the following best describes a controlled variable whose influence on a response is being studied?

Which of the following will have the most influence on consumers’ perception of quality?

Which value of x will minimize transmitted noise?

The Graph which helps to identify and prioritize problems to be solved?

This QFD matrix was used in the design process for a ball point pen. What symbol is appropriate for the square labeled 2?

A six sigma team has gathered data for a project proposal and is using the following notations.

I = Initial investment

C = Periodic maintenance cost

B = Benefits to be accrued

On the basis of the information above, which of the following is the criteria used to select a project?

Lean Enterprise is based on the premise that anywhere work is being done which of these is also occurring?

A black belt is developing a failure mode and effects analysis (FMEA) for the hamburger preparation station in a fast-food restaurant. The following ratings were developed for the low-heat temperature failure mode.

Severity = 9

Occurrence = 2

Detection = 1

What is the risk priority number (RPN) for this FMEA?

After a team has engaged in diversion activities they may need to employ a tool for conversion. Examples of such a tool are:

I. nominal group technique

II. Multivoting

III. cause and effect diagram

IV. activity network diagram

V. matrix diagrams

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

There are 14 different defects that can occur on a completed time card. The payroll department collects 328 cards and finds a total of 87 defects. DPMO =:

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.

The data for a nine hour period are:

Which type of variation dominates? (Hint: Plot the points on the graph above.)

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

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:

When comparing two vendors’ machines it is found that a sample of 1000 parts from machine A has 23 defectives and a sample of 1300 parts from machine B has 36 defectives. Do the data indicate that machine B has a higher rate of defectives?

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

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

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:

An experiment has seven factors with two levels each. The experiment has eight runs. This experimental design is called:

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

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

A random sample is selected from a population of measurements. The mean of the sample is not equal to the mean of the population. This is due to:

An automatic gaging system is to be installed in a process. The gage will insert data values into a data base from which machine adjustments will be made automatically. A critical factor in specifying the equipment is:

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?

The average weight of castings produced at the Nebraska foundry is 3.7 lbs. A new supplier from Kansas has submitted a batch of castings known to have normally distributed weights. A random sample of 10 has an average weight of 3.6 lbs. and standard deviation 0.06 lbs. Do these data indicate that the Kansas foundry produce lighter castings on average?

A population is bimodal. One hundred samples of size 30 are randomly collected and the 100 sample means are calculated. The distribution of these sample means is:

There are 14 different defects that can occur on a completed time card. The payroll department collects 328 cards and finds a total of 87 defects. DPU =

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

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 larger than 1/2.

The word “champion” in the context of Six Sigma projects refers to:

A team wants a technique for obtaining a large number of possible reasons for excess variation in a dimension. They should use:

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.  

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

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

The preferred method for determining statistically whether factor A or B is significant requires what additional information?