CSSBB Online Practice Questions and Answers

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 Lean toolbox includes all of the following items except __________.

A. Poke-Yoke

B. Standard Operating Procedures

C. Kaizen

D. 5S the work area

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

Which statement(s) are correct about the Factorial Plot shown here? (Note: There are 3 correct answers).

A. When the cutting speed increased from low to high level, the tool age increases

B. The coefficient of the metal hardness is positively related to the output of tool age

C. The coded coefficient is lower for cutting speed than the cutting angle related to the output of tool age

D. These plots prove a statistically significance factor with 95% confidence

E. These plots are an example of interaction plots

When variation is removed from the output of a process then the process customer can have more confidence in the experience that results from the process.

A. True

B. False

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

A. 3 When Analysis

B. Skeleton Diagnostic

C. Ishikawa Diagram

D. 5 Why Analysis

For a batch manufacturing process, while assessing short term process variation, which variation category(ies) should one need to focus on? (Note: There are 2 correct answers).

A. Variation within consecutive pieces

B. Variation among consecutive batches

C. Variation among groups of pieces

D. Variation among the completed product

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

Each of the items listed would impact the Process Capability for a process with a continuous output except ___________________.

A. Shape of process data distribution (e.g. Normal Distribution)

B. Process Technology

C. Process Standard Deviation

D. Seasonal variation in process

Production Line 1 is able to complete 500 units per shift. Production Line 2 is able to finish 1,500 units per shift. Production Line 2 is 3 times faster than Production Line 1. This analysis is an example of ______________ Scale Data.

A. Nominal

B. Ratio

C. Ordinal

D. Interval