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ASQ CSSBB Six Sigma Black Belt Certification Exam Practice Test

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Total 227 questions

Six Sigma Black Belt Certification Questions and Answers

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Question 1

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.

Options:

A.

Response Plan

B.

Call List

C.

Chain-of-Command

D.

Defect Analysis Plan

Question 2

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

Data: unit input: 1215, unit output: 1180, defects repaired: 184, scrap: 42

Options:

A.

80.85%

B.

81.40%

C.

82.23%

D.

84.96%

Question 3

The Control Limits width varies if the sample size varies for which type of chart?

Options:

A.

P Charts

B.

NP Charts

C.

Xbar-R Charts

D.

Time Series Charts

Question 4

Fractional Factorial designs are used to reduce the ____________ because the number of runs has been lowered.

Options:

A.

Time and cost of experiments

B.

Number of people involved

C.

Number of data measurement points

D.

Output summary

Question 5

A valid Multiple Linear Regression (MLR) is characterized by all of these except _______________________.

Options:

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

Question 6

Which of these might contribute to similar distributions having Unequal Variance?

Options:

A.

Extreme tails

B.

Outliers

C.

Multiple Modes

D.

All of the above

Question 7

A(n) ________________ has occurred when two inputs have a greater impact on a change in the output than either of the inputs has by itself.

Options:

A.

Dependency

B.

Bimodal reaction

C.

Interaction

D.

Amplified effect

Question 8

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

Options:

A.

Pareto

B.

Xbar

C.

Multi-Vari

D.

NP

Question 9

Which of the items listed do not define what an X-Y Diagram is?

Options:

A.

Created for every project

B.

Based on team's collective opinions

C.

Updated whenever a parameter is changed

D.

Used to show each step in a process

E.

A living document throughout project lifecycle

Question 10

It would be more likely than not for a Belt conducting a Regression Analysis to find that the _______________________.

Options:

A.

r2 value is smaller than the absolute value of r

B.

Correlation Coefficient equals r2

C.

Coefficient of Determination is less than r2

D.

Correlation Coefficient equals r divided by 2

Question 11

Measurement __________ is defined as the difference between the observed and the expected values for a given set of data.

Options:

A.

Breadth

B.

Linearity

C.

Range

D.

Bias

Question 12

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

Options:

A.

Value Stream

B.

Kaizen event

C.

Takt time

D.

Kanban

Question 13

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

Options:

A.

Some Residuals higher than others

B.

Residuals will represent a Linear Regression

C.

All Residuals within 2 Standard Deviations of the Mean

D.

Some Residuals lower than others

Question 14

An operator is measuring the distance between two points. Which is most likely to be influenced by the operator?

Options:

A.

Precision of the measurement

B.

Accuracy of the measurement

C.

Calibration of the instrument

D.

All of these answers are correct

Question 15

The two types of data that can be used in Statistical Analysis are Attribute and Variable.

Options:

A.

True

B.

False

Question 16

On a _________________ a Belt screens variables, or various inputs, to analyze their relative impact on the output of concern.

Options:

A.

X-Y Matrix

B.

Weighted Scale

C.

Multi-Vari Chart

D.

Poisson Chart

Question 17

Fractional Factorial, ____________and Response Surface Method are types of planned experiments.

Options:

A.

Multi-Vari Analysis

B.

Baldridge Channels

C.

One Factor at a Time or OFAT

D.

Factorial Design

Question 18

Following process modifications, the Null Hypothesis states that no improvement to the process has occurred. If we discover the Null Hypothesis Test was rejected when it was false that would be a(n) ________________________.

Options:

A.

Alpha Error

B.

Type I Error

C.

Type II Error

D.

Type III Error

Question 19

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

Options:

A.

Poisson

B.

Extended

C.

Exponential

D.

Weibull

Question 20

A Non-parametric Test should be used if just one distribution is not Normal out of the two or more gathered.

Options:

A.

True

B.

False

Question 21

The Waste of Overproduction is defined as ______________________.

Options:

A.

The unnecessary movement of people and equipment

B.

The liability of materials that are bought, invested in and not immediately sold or used

C.

Producing more than the next step needs or more than the customer buys

D.

The extra movement of material

Question 22

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.

Options:

A.

True

B.

False

Question 23

The method of Steepest Ascent guides you toward a target inside the original inference space.

Options:

A.

True

B.

False

Question 24

A ___________ is used primarily to track the stability of the average value of a metric of interest.

Options:

A.

NP Chart

B.

Xbar-R Chart

C.

I-MR Chart

D.

C Chart

Question 25

A Factorial Experiment based on a Level 2 Design with 6 factors would require 16 runs to fully assess the interactions.

Options:

A.

True

B.

False

Question 26

Which of these items contribute to what is necessary for successful Kaizen events?

Options:

A.

Analysis tools

B.

Management support

C.

Operator support

D.

All of these answers are correct

Question 27

The method of Steepest Ascent guides you toward a target inside the original inference space.

Options:

A.

True

B.

False

Question 28

When a Belt creates a Process Map she will use a __________________ to depict a decision point requiring a Yes or No decision.

Options:

A.

Circle

B.

Square

C.

Diamond

D.

Rectangle

Question 29

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 $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?

Options:

A.

$6

B.

$12

C.

$24

D.

$48

Question 30

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.

Options:

A.

True

B.

False

Question 31

Data that can be measured on a continuum and has meaningful decimal subdivisions are __________ data.

Options:

A.

Continuous

B.

Surplus

C.

Discrete

D.

Variable

Question 32

The Normal Distribution is considered to be the most important distribution in statistics and, among other things is defined as having a total area under the curve of 1, is mounded and symmetrical and the Mean, Median and Mode are _____________.

Options:

A.

All evenly divisible by 3

B.

Twice the Standard Deviation

C.

Within 10% of each other

D.

The same number

Question 33

With Measurement System Analysis we are concerned with two issues that impact the potential variability of the data. They are ____________ and Accuracy.

Options:

A.

Spread

B.

Reliability

C.

Precision

D.

Deflection

Question 34

The primary objective in removal of waste is to improve the Order Production Cycle where the time from _________________ to the time of receipt of payment is compressed.

Options:

A.

Shift start

B.

Product development

C.

Receipt of an order

D.

New fiscal year

Question 35

An example of the waste of mismanaged Inventory is __________.

Options:

A.

Capital costs of money

B.

Value decrease from aged inventory

C.

Cost of storage space

D.

All of these answers are correct

Question 36

Screening experiments are the proper choice when a Belt is faced with the situation of highly Fractional Factorial Designs.

Options:

A.

True

B.

False

Question 37

The reported Cpk for a process with an average of 98 units, a spread of 16 units and upper and lower specification limits of 115 and 90 units would be?

Options:

A.

0.5

B.

0.75

C.

1.00

D.

1.25

Question 38

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?

Options:

A.

2.33

B.

4.67

C.

6.48

D.

8.28

Question 39

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

Options:

A.

Two factors were operated at 3 levels each

B.

The highest tool age was achieved with metal hardness at high level while keeping the cutting speed at the low level

C.

The design indicated above is a 32 factorial design

D.

The cutting speed and cutting angle are at the low level for the least tool age achieved

E.

All factors had 2 levels in the experiment

Question 40

Early in a project a Belt will want to begin to identify and evaluate risk factors for the subject process and will therefore begin building a(n) ________.

Options:

A.

FMEA

B.

SIPOC

C.

X-Y Diagram

D.

Team Charter

Question 41

In a Fishbone Diagram the 6M’s stand for Methods, Measurements, Machine, Man, Mother Nature and ____________ .

Options:

A.

Management

B.

Merger

C.

Materials

D.

Medical

Question 42

Following process modifications, the Null Hypothesis states that no improvement to the process has occurred. If we discover the Null Hypothesis Test was rejected when it was false that would be a(n) _______________.

Options:

A.

Type I Error

B.

Type II Error

C.

Type III Error

D.

Alpha Error

Question 43

A(n) ______________ is best used to compare a Machine 1 average quality characteristic to the same quality characteristic of Machine 2.

Options:

A.

1-Sample t-test

B.

2-Sample t-test

C.

F test

D.

ANOVA test

Question 44

If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement(s) are correct? (Note: There are 3 correct answers).

Options:

A.

The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions

B.

The Main Effects are confounded with only 4-way interactions

C.

The Experimental Design is half-fractional

D.

The experiment has 8 experimental runs with the first factor at the high level

E.

The experiment has only 4 experimental runs with the 5th factor at the high level

Question 45

The relationship between a response variable and one or more independent variables is investigated and modeled by use of which of these?

Options:

A.

X-Y Matrix

B.

Baldridge Assessment

C.

Critical X's Definition

D.

Analysis of Variance (ANOVA)

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Total 227 questions