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IASSC ICBB - IASSC Lean Six Sigma – Black Belt

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Total 300 questions

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.

A.

Ordinal Scale Data

B.

Interval Scale Data

C.

Nominal Scale Data

D.

Ration Scale Data

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

A.

Multi-Vari Analysis

B.

Baldridge Channels

C.

One Factor at a Time or OFAT

D.

Factorial Design

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

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

A.

True

B.

False

Assessing process proportion as opposed to evaluating a process with respect to a set target can be done using one or more of these. (Note: There are 2 correct answers).

A.

Process proportion equals some desired value

B.

Process proportion equals some value range

C.

Target is current

D.

When we deal with Attribute type data

E.

Proportion of the tail is equal

When analyzing the behavior of our process to assess customer satisfaction we are concerned about both the variation such that it stays within the spec limits and how well the Mean is __________________ the process requirements.

A.

Balanced against

B.

Over and above

C.

Twice as great as

D.

Centered relative to

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?

A.

0.67

B.

1.13

C.

1.33

D.

2.66

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

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

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

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

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

A.

P Charts

B.

NP Charts

C.

Xbar-R Charts

D.

Time Series Charts