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IASSC ICBB - IASSC Lean Six Sigma – Black Belt

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Page: 5 / 9
Total 300 questions

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?

A.

0.5

B.

0.75

C.

1.00

D.

1.25

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

A.

NP Chart

B.

Xbar-R Chart

C.

I-MR Chart

D.

C Chart

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

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

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?

A.

Y = Z(X2)

B.

Y = f(X3)

C.

Y = f(Xn)

D.

Y = g(X+ 1.5)

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 _________.

A.

NP Chart

B.

Individuals Chart

C.

R Chart

D.

C Chart

An operator checks that all boxes being packed contain enough products to fill the box. However, each box getting filled has a different number of products in it. This is a Reproducibility problem, not a Repeatability problem.

A.

True

B.

False

An ANOVA used across many dependent variables could increase the Beta risk.

A.

True

B.

False

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?

A.

8

B.

16

C.

32

D.

64

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

A.

3 When Analysis

B.

5 Why Analysis

C.

Ishikawa Diagram

D.

Skeleton Diagnostic

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

A.

Bias

B.

Linearity

C.

Range

D.

Breadth