six sigma icgb practice test

A periodic time frame can be used to arrange for Control Limit and Center Line calculations with
good SPC implementation in a process.

• A. True
• B. False

The data on SPC charts are typically constructed such that they have the most recent data point on
the right hand side.

• A. True
• B. False

Which statement(s) describe an undesirable situation when implementing SPC?

• A. The lower Control Limit for the R chart is equal to zero
• B. Attempt to use SPC for tracking transaction times at a warehouse
• C. A process is in Statistical Control before implementation of SPC
• D. The Control Limits are wider than the customer specification limits

If a process has Outliers which pair of charts is most preferable if subgroups will exist for the
Continuous Data?

• A. Individual—Moving Range
• B. Xbar-R Charts
• C. Xbar-S Charts
• D. nP and P Charts

After a Belt has put data through the smoothing process which chart would be used to look for trends
in the data?

• A. Moving Average Chart
• B. Multi-Vari Chart
• C. X bar Chart
• D. Pareto Chart

A Belt concludes a Lean Six Sigma project with the creation of a Control Plan. At what point can the
Control Plan be closed?

• A. Never, a Control Plan is a living document
• B. As soon as the Champion signs off
• C. Within 30 days of the LSS project review team meeting
• D. After the project has been presented at the recognition event

When analyzing a data set we frequently graph one metric as a function of another. If the slope of
the Correlation line is -2.5 we would say the two metrics are ___________ correlated?

• A. Positively
• B. Not
• C. Negatively
• D. None

Multiple Linear Regressions (MLR) is best used when which of these are applicable? (Note: There are
3 correct answers).

• A. Non-linear relationships between the inputs X’s and output Y
• B. Uncertainty in the slope of the linear relationship between an X and a Y
• C. Relationships between Y (output) and more than one X (Input)
• D. Preventing the use of a Designed Experiment if unnecessary
• E. We assume that the X’s are independent of each other

Fractional Factorial designs for an experimental approach are used when ____________ about the
multiple metric interaction in a process.

• A. Much is known
• B. Little is known
• C. We don’t care
• D. Data exists

A Belt will occasionally do a quick experiment referred to as an OFAT which stands for
____________________.

• A. Only a Few Are Tested
• B. Opposite Factors Affect Technique
• C. One Factor At a Time
• D. Ordinary Fractional Approach Technique