Using this data calculate the percentage of DPU.

A.

A. 2.74

B.

B. 3.23

C.

C. 4.56

D.

D. 5.93

SPC Charts are used extensively in different business and decision-making environments.
In this example a vendor is being selected based on speed of delivery. Which of the
conclusions would help you pick a vendor for your needs regarding lead-time of delivery
from your vendors?(Note:There are 4 correct answers).

A.

Vendor A with a much shorter lead time in delivery

B.

Vendor B as it has a better consistency (lower variance) on lead time

C.

Vendor B as Vendor A shows a situation out of control as shown in red

D.

Vendor B as the Control Limits are much narrower than Vendor A

E.

Vendor B with higher lead time, but a process with much narrower Control Limits

Six Sigma is a business improvement discipline whose fundamental view is based on a
_________ oriented approach of the business.

A.

Profit

B.

Performance

C.

Process

D.

Predatory

Control Charts were developed by Dr. Shewhart to track data over time. To detect Special
Cause variation the Control Charts use which of these?

A.

Data shift analysis

B.

Outlier analysis methods

C.

Center Line and Control Limits

D.

None of the above

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

A.

Rejection of the Alpha

B.

We fail to reject the Null Hypothesis

C.

The test was conducted improperly

D.

We reject the Null Hypothesis

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

(Note:There are 3 correct answers).

A.

A. This is a Poisson Capability Analysis.

B.

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

C.

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

D.

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.

E.

The maximum DPU in one observation was nearly 0.0753

A Lean Six Sigma project is attempting to reduce inventory days. The Process Capability
will be monitored as part of the Control Phase to track the sustainability of the
improvement. 
Which distribution type is best used for performing the Capability Analysis?

A.

Weibull Distribution

B.

Normal Distribution

C.

Exponential Distribution

D.

Logistic Distribution

E.

Gaussian Distribution

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) ________________________.

A.

Alpha Error

B.

Type I Error

C.

Type II Error

D.

Type III Error

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

A.

Median

B.

Mean

C.

Mode

D.

Center Point

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

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