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Questions 4

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.

Options:

A.

Sign-off

B.

Signal

C.

Bell to ring

D.

Work order

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Questions 5

How many experimental runs exist in a Full Factorial and fully randomized design for 4 factors with 2 replicates for the Corner Points and no Center Points? The factors in the experiment are only at 2-levels.

Options:

A.

10

B.

32

C.

256

D.

64

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Questions 6

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.

Some Residuals lower than others

C.

All Residuals within 2 Standard Deviations of the Mean

D.

Residuals will represent a Linear Regression

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Questions 7

Appropriate measures means that measurements are ______________.

Options:

A.

Representative

B.

Sufficient

C.

Contextual

D.

Relevant

E.

All of these answers are correct

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Questions 8

When a Belt Poka-Yoke’s a defect out of the process entirely then she should track the activity with a robust SPC system on the characteristic of interest in the defect as an early warning system.

Options:

A.

True

B.

False

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Questions 9

In a good Measurement System the most variation will be with part-to-part measurements. What should you do if the majority of variation is associated with the Gage R&R assuming the gage is technically capable?

Options:

A.

Focus on fixing the Repeatability and Reproducibility of the measurement device

B.

Purchase a new machine

C.

Focus on trimming the Part-to-Part variation

D.

Run another MSA test with the machine

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Questions 10

Sally and Sara sell flower pots at their garage sale. Martha motivates Rose mentioning that they will sell a minimum of 16 pots per day if the outside temperature exceeds 60o F. From a sample, whose population is assumed to follow a Normal Distribution, taken for 30 days at 60 degrees or more an average of 15.2 pots per day were sold with a Standard Deviation of 0.6 pots. What is the Z value for this sales process?

Options:

A.

0.67

B.

1.13

C.

1.33

D.

2.66

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Questions 11

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

Options:

A.

Pareto

B.

Xbar

C.

Multi-Vari

D.

NP

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Questions 12

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

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Questions 13

A Belt is analyzing data and upon creation of the graphical analysis sees multiple modes. One of the primary reasons this could occur is because the process has experienced a ____________________.

Options:

A.

Significant change from one shift to another

B.

Sizable Measurement System error

C.

Catastrophic failure of some sort

D.

Any one of these

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Questions 14

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

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Questions 15

Which of these elements are not included in Implementation plans?

Options:

A.

Work breakdown structure

B.

Risk management plans

C.

Cost/Benefit ratios

D.

Planned audits of work completion

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Questions 16

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

Options:

A.

Hypothesis Testing of Means or Medians cannot be done since there are an unequal number of observations for the 3 samples

B.

A Paired T-test would be applicable for comparing Grade B and Grade A since they follow each other in the data set

C.

Grade A has the lowest sample Mean of the 3 samples

D.

Grade A has a higher sample Mean than Grade B

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Questions 17

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

Options:

A.

3 When Analysis

B.

Skeleton Diagnostic

C.

Ishikawa Diagram

D.

5 Why Analysis

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Questions 18

What is the Ppk of a process with a spread of 24 units, an average of 68, an upper limit of 82 and a lower limit of 54?

Options:

A.

1.68

B.

2.00

C.

4.00

D.

4.42

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Questions 19

Common and Special Cause ______________ are the focus of Statistical Process Control.

Options:

A.

Prediction

B.

Ideation

C.

Capability

D.

Variation

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Questions 20

Choose those characteristics of a Simple Linear Regression (SLR) Analysis that are applicable. (Note: There are 3 correct answers).

Options:

A.

The Correlation Coefficient is always greater than the Regression Coefficient in a SLR

B.

General Regression Analysis deals only with Continuous Data

C.

Non-linear Regressions can explain curvature when with more statistical confidence than Linear Regressions

D.

SLR can help quantify the significance of variation in X that influences the variation in Y via a mathematical equation

E.

A Correlation does not explain causation but a Regression Analysis with a statistically valid mathematical equation does explain causation

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Questions 21

All the data points that represent the total set of information of interest is called the ________________ .

Options:

A.

Population

B.

Sample

C.

Frame

D.

Spread

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Questions 22

A natural logarithmic base is not required for which of these distributions for probability calculations?

Options:

A.

Weibull

B.

Binomial

C.

Poisson

D.

Normal

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Questions 23

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

Options:

A.

Length of a table

B.

Liters of solution added to a formula

C.

Number of employees wearing a uniform

D.

Miles per hour of a vehicle

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Questions 24

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.

The Residuals from MLR analysis have to be Normally Distributed

D.

MLR is conducted based on a deliberate form of experimentation

E.

It is not possible to evaluate interactions in a MLR analysis

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Questions 25

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

Options:

A.

Xbar Chart

B.

Time Series Chart

C.

Neither

D.

Both

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Questions 26

When we gather information for the Voice of the Business we are primarily interested in information concerning the _____________ of the business.

Options:

A.

Advertising budget

B.

Market share

C.

Profitability

D.

Ownership

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Questions 27

What is the Ppk of a process with a spread of 24 units, an average of 68, an upper limit of 82 and a lower limit of 54?

Options:

A.

1.68

B.

2.00

C.

4.00

D.

4.42

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Questions 28

For a Kanban to be successful which of these must occur?

Options:

A.

Consistent cycle times

B.

Fairly stable process demand of product or service

C.

Low defect rate of incoming product or service

D.

All of the above

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Questions 29

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

Options:

A.

Skewness

B.

Mixed Distributions

C.

Kurtosis

D.

Formulosis

E.

Granularity

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Questions 30

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

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Questions 31

The relationship between a response variable and one or more independent variables is investigated and modeled by use of __________________.

Options:

A.

X-Y Matrix

B.

Baldridge Assessment

C.

Analysis of Variance (ANOVA)

D.

Critical X's Definition

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Questions 32

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

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Questions 33

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

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Questions 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

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Questions 35

For Attribute Data, Process Capability is defined as the average proportion of nonconforming products.

Options:

A.

True

B.

False

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Questions 36

If you can Poka-Yoke a defect out of the process entirely then you do not need use SPC on the characteristic of interest in the defect.

Options:

A.

True

B.

False

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Questions 37

Special Cause Variation falls into which two categories?

Options:

A.

Natural & Unnatural

B.

Short Term & Long Term

C.

Assignable & Pattern

D.

Attribute & Discreet

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Questions 38

Questions that can be best answered by a Visual Factory include all of these except _____________________.

Options:

A.

Are downtime issues easily noted?

B.

Can extra inventory be seen easily?

C.

Are unneeded tools or supplies easily noted?

D.

Are setups optimized for lower scrap levels?

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Questions 39

If a process has subgroups for Variable data and the process runs for a long period of time, then the best pair of SPC Charts to use would be an Xbar and _________.

Options:

A.

NP Chart

B.

Individuals Chart

C.

R Chart

D.

C Chart

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Questions 40

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

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Questions 41

The two types of data that are to be used in Statistical Analysis are Attribute and Variance.

Options:

A.

True

B.

False

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Questions 42

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%

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Questions 43

Upon completion and validation of an improvement to a process a Belt and the Project Team create a Control Plan that contains which of these?

Options:

A.

Standard operating work description of the process change

B.

Description of the monitoring system in place to assure continued compliance

C.

Summary of the targeted critical metrics for process performance measurement

D.

All of the above

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Questions 44

A dock worker for a feed supplier was tasked with assuring the proper weight in the feed bags as they left the dock. One of the columns listed the range of weight of the bags included in the studies. This required plotting a Histogram of the weight of the bags. While drawing the Histogram the x-axis contained a certain scale of data. Pick the scale of data that is appropriate for Histograms.

Options:

A.

Ordinal Scale Data

B.

Interval Scale Data

C.

Nominal Scale Data

D.

Ration Scale Data

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Questions 45

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

Options:

A.

F test

B.

1-Sample t-test

C.

2-Sample t-test

D.

ANOVA test

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Questions 46

Since Normality is required if we intend to use the data collected as a predictive tool. To test for Normality of data we must determine if the P-value is ___________.

Options:

A.

Equal to 0.05

B.

Less than 0.05

C.

Greater than 0.05

D.

Greater than 0.5

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Questions 47

A Personal Trainer was assessing her workout class participants for their body fat content and had to include data for her analysis. One of the columns listed the range of weight of the people included in the studies. This required plotting a Histogram of the weight of the people assessed for their body fat content. While drawing the Histogram the x-axis contained a certain scale of data. Pick the scale of data that is appropriate for Histograms.

Options:

A.

Ordinal Scale Data

B.

Ration Scale Data

C.

Nominal Scale Data

D.

Interval Scale Data

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Questions 48

A Full Factorial experiment using a 2 level 4 factor approach has been proposed to test the viability of an extrusion machine experiment. How many treatment combinations will this approach involve?

Options:

A.

8

B.

16

C.

32

D.

64

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Questions 49

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

Options:

A.

Value Stream Map

B.

FMEA

C.

Pareto Chart

D.

Standard Operating Procedure

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Questions 50

A valid mathematical Regression represents all of the characteristics shown except _________________.

Options:

A.

All of the standardized residuals will be within ±3 Standard Deviations

B.

The sum of the residuals is zero

C.

The residuals when plotted follow a Normal Distribution

D.

Most standardized residuals are within ±2 Standard Deviations

E.

The Residual is equal to the difference between the observed and predicted values

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Questions 51

Production Line 1 is able to complete 500 units per shift. Production Line 2 is able to finish 1,500 units per shift. Production Line 2 is 3 times faster than Production Line 1. This analysis is an example of ______________ Scale Data.

Options:

A.

Nominal

B.

Ratio

C.

Ordinal

D.

Interval

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Questions 52

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

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Questions 53

The Mann-Whitney test is a powerful test and is unique to situations from which of the choices listed? (Note: There are 2 correct answers).

Options:

A.

Testing the identity of two populations

B.

Focuses on equality of the Median of the two populations

C.

Less powerful than the traditional “t-test”

D.

More widely applicable than the traditional “t-test”

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Questions 54

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

Options:

A.

The air-fuel ratio explains most of the TurbineOutput variation

B.

The Regression explains over 98% of the process variation

C.

This Multiple Linear Regression has three statistically significant independent variables

D.

If the air-fuel ratio increases by 1, the TurbineOutput more than triples

E.

The SteamExitTemp explains the most variation of the TurbineOutput

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Questions 55

The distance between the Mean of a data set and the Point of Inflection on a Normal curve is called the _______________.

Options:

A.

Curve Spread

B.

Standard Deviation

C.

Numerical Average

D.

Data Breadth

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Questions 56

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

Options:

A.

The dependent variable is the outside temperature

B.

The relationship between outside temperature and number of customers per hour is a Linear Regression

C.

The dashed lines indicate with 95% confidence where all of the process data should fall between

D.

The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line

E.

The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C

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Questions 57

Some of the sources for different types of error that can be quantified using Statistical Analysis are ___________________.

Options:

A.

Error in sampling

B.

Bias in sampling

C.

Error in measurement

D.

All of these answers are correct

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Questions 58

Kaizens or Kaikakus and Six Sigma projects are intended to create breakthrough, significant process improvement versus minor, incremental improvements.

Options:

A.

True

B.

False

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Questions 59

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

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Questions 60

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

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Questions 61

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

Options:

A.

Beta risk

B.

Alpha risk

C.

Range of data

D.

Sample size

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Questions 62

Which statement(s) are correct about the Pareto Chart shown here for the DOE analysis? (Note: There are 2 correct answers).

Options:

A.

It is unknown from this graph how many factors were in the Experimental Design

B.

The factors to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 2.06

C.

The effects to keep in the mathematical model are E, D, DE, BD and B with an alpha risk equal to 0.05

D.

The factors to keep in the mathematical model with a 5% alpha risk are BE, AB, A and AD

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Questions 63

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?

Options:

A.

Individual Chart

B.

C Chart

C.

Xbar Chart

D.

P Chart

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Questions 64

Using this data calculate the percentage of DPU.

Options:

A.

2.74

B.

3.23

C.

4.56

D.

5.93

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Questions 65

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.

Options:

A.

Sign-off

B.

Signal

C.

Bell to ring

D.

Work order

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Questions 66

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

Options:

A.

Poke-Yoke

B.

Standard Operating Procedures

C.

Kaizen

D.

5S the work area

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Questions 67

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

Options:

A.

True

B.

False

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Questions 68

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 $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. Select the answer that best states the Practical Problem.

Options:

A.

If the average cost per component is $4,200 or less, then the purchase manager will introduce the new product upgrade with new components.

B.

If the average cost per component is greater than $4,200, then the purchase manager will introduce the new product upgrade with new components.

C.

Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components.

D.

If the average cost per new product upgrade is less than $180, then the purchase manager will introduce the new product upgrade with new components.

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Questions 69

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?

Options:

A.

Y = Z(X2)

B.

Y = f(X3)

C.

Y = f(Xn)

D.

Y = g(X+ 1.5)

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Questions 70

The _____________ Distribution would be the most desirable for modeling the number of stitch defects in a portion of fabric.

Options:

A.

Exponential

B.

Extended

C.

Poisson

D.

Weibull

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Questions 71

A statistical test or Hypothesis Test is performed to reject or fail to reject a stated hypothesis and it converts the Practical Problem into a Statistical Problem.

Options:

A.

True

B.

False

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Questions 72

The Greek letter “sigma” is used by mathematicians to signify _____________.

Options:

A.

Curve Width

B.

Numerical Average

C.

Standard Deviation

D.

Data Spread

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Questions 73

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

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Questions 74

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

Options:

A.

Response Surface design

B.

Full Factorial design

C.

Simple Linear Regression

D.

Fractional Factorial design

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Questions 75

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

Options:

A.

The variance between the class score distribution is significantly different

B.

The variance between the class score distribution is not significantly different

C.

This test applies only to Normal Distributed data at 99 % confidence

D.

This test applies only to Non-normal Data at 99 % confidence

E.

There are not enough data points to make any statistical conclusions

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Questions 76

A Belt rearranged the location of the parts inventory for a rework station locating the most often used parts to be within hand reach of the repair person. This rearrangement resulted in quicker repair times by eliminating one of seven major elements of waste which is the Waste of __________.

Options:

A.

Motion

B.

Conveyance

C.

Inventory

D.

Waiting

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Questions 77

Which statement is most correct for the Regression Analysis shown here?

Options:

A.

The Regression explains 50.8% of the process variation

B.

The air-fuel ratio explains most of the TurbineOutput variation

C.

This Simple Linear Regression explains 98+% of the process variation

D.

This Multiple Linear Regression has four statistically significant independent variables

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Questions 78

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 $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. In order to increase the Long Term Z value to 4, what is the maximum long term variation in pricing the Belt can accept for his upgraded critical raw material component?

Options:

A.

$20

B.

$35

C.

$70

D.

$110

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Questions 79

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 _______________.

Options:

A.

Within, Between and Temporal

B.

Within, Between and Temporary

C.

Without, Above and Below

D.

Induced, Natural and Unavoidable

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Questions 80

Customers make their decisions based on Features, Integrity (of the seller) Delivery and ___________?

Options:

A.

Color

B.

Expense

C.

Season

D.

None

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Questions 81

Fractional Factorial Designs are used to analyze factors to model the output as a function of inputs if Hypothesis Testing in the Analyze Phase was inadequate to sufficiently narrow the factors that significantly impact the output(s).

Options:

A.

True

B.

False

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Questions 82

During the ______________ phase of 5S is when we might implement a Red Tag program.

Options:

A.

Straightening

B.

Standardizing

C.

Shining

D.

Sorting

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Questions 83

The _______ is the most frequently occurring value in a distribution of data.

Options:

A.

Median

B.

Mean

C.

Mode

D.

Center Point

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Questions 84

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

Options:

A.

8

B.

13

C.

28

D.

57

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Questions 85

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: 7.2 Lower specification limit: 4.3 Mean of the process: 5.9 Standard Deviation: 0.65 Monthly production: 450 units

Options:

A.

3

B.

7

C.

10

D.

12

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Questions 86

Handling of warranty returns, process improvement team meetings and rework to meet customer expectations are all examples of business costs that are classified as ___________ .

Options:

A.

Nuisance

B.

Non-value Add

C.

Necessary

D.

Unavoidable

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Questions 87

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

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Questions 88

Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct answers).

Options:

A.

When the cutting speed increased from low to high level, the tool age increases

B.

The coefficient of the metal hardness is positively related to the output of tool age

C.

The coded coefficient is lower for cutting speed than the cutting angle related to the output of tool age

D.

These plots prove a statistically significance factor with 95% confidence

E.

These plots are an example of interaction plots

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Questions 89

The English words used for the 5S’s are Sorting, Straightening, _____________ , __________ and Sustaining. (Note: There are 2 correct answers).

Options:

A.

Shaping

B.

Shining

C.

Standardizing

D.

Signing

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Questions 90

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

Options:

A.

Child’s height is 4 foot 3 inches

B.

Three employees wore hard hats

C.

Car burned 2.7 gallons of gasoline

D.

Train was going 140 kilometers per hour

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Exam Code: CSSBB
Exam Name: Certified Six Sigma Black Belt
Last Update: May 23, 2024
Questions: 300
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