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IASSC ICBB - IASSC Lean Six Sigma – Black Belt

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Total 300 questions

Which statements are correct about the advanced Capability Analysis shown here?

(Note: There are 3 correct answers).

A.

This is a Poisson Capability Analysis.

B.

The average DPU with 95% confidence is between 0.024 and 0.0295.

C.

The DPU does not seem to vary depending on sample size.

D.

The process shows only one instance of being out of control statistically so we have confidence in the estimated DPU of this process.

E.

The maximum DPU in one observation was nearly 0.0753.

Which of these are examples of business metrics or Key Performance Indicators commonly referred to as KPI’s?

A.

Cycle Time

B.

Defects

C.

No. of Units Reworked

D.

Labor Hours

E.

All of these answers are correct

For the data shown here which statement(s) are true? (Note: There are 2 correct answers).

A.

With 95% confidence, we cannot conclude if the samples are from three Normal Distributions

B.

With greater than 95% confidence, we conclude the samples are from Non-normal Distributions

C.

If we wanted to compare the Central Tendencies of these three samples we would use the one way ANOVA test

D.

If we wanted to compare the Central Tendencies of these three samples we could use Mood’s Median test

E.

If we wanted to compare the Central Tendencies of all three samples we could use the Mann-Whitney test

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

A.

Exponential

B.

Extended

C.

Poisson

D.

Weibull

Two of the key deliverables for the Measure Phase are a robust description of the process and its flow and an assessment of the Management System.

A.

True

B.

False

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).

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

Which statement is NOT correct about the Fitted Line Plot shown here?

A.

The independent variable is the reactant

B.

If the reactant was 10 units, with 95% confidence we would expect a minimum yield of 148 units

C.

With at least 95% confidence, we can expect less than 10 units of Yield when the reactant is at a value of 1

D.

A reactant value between 6 and 8 units yields around 40 to 60

E.

When the reactant increases, the expected yield would increase

As a means of measuring the effects on other areas of a process as a result of changes in the primary metric we also define and track ________________.

A.

Parallel process metrics

B.

Secondary metrics

C.

Tertiary metrics

D.

Industry standards

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

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

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.

A.

True

B.

False