ICBB Online Practice Questions and Answers

Which statement(s) are incorrect about Fractional Factorial Designs?

A. A Half Fractional Design for 5 factors has the same number of experimental runs as a Full Factorial Design for 4 factors assuming no repeats or replicates or Center Points

B. Quarter Fractional experiments can exist for those with 4 factors

C. Resolution V design is desired while controlling costs of experimentation

D. Half Fractional experiments do not exist for those designs with only 2 factors

Which statement is NOT correct about the Fitted Line Plot shown here?

A. The independent variable is the reactant

B. If the reactant was 6 units, with 95 % confidence we would expect a minimum yield of 100 units

C. With at least 95% confidence, we can expect less than 10 units of Yield when the reactant is at a value of 1

D. A reactant value between 2 and 4 units yields around 20 to 40

E. When the reactant increases, the expected yield would increase

How many experimental runs exist in a Full Factorial and fully randomized design for 5 factors with 2 replicates for the Corner Points and no Center Points? The factors in the experiment are only at 2- levels.

A. 10

B. 128

C. 256

D. 64

What is the Ppk of a process with a spread of 24 units, an average of 68, an upper limit of 82 and a lower limit of 54?

A. 1.68

B. 2.00

C. 4.00

D. 4.42

Customers make their decisions based on Features, Integrity (of the seller) Delivery and ___________?

A. Color

B. Expense

C. Season

D. None

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

From the variance F-test shown above, which of these conclusions is/are valid?

A. The variance between the class score distribution is not significantly different

B. This test applies only to Normal Distributed data at 99 % confidence

C. The variance between the class score distribution is significantly different

D. There are not enough data points to make any statistical conclusions

Cost of Poor Quality (COPQ) can be classified as Visible Costs and Hidden Costs. Which of these items is a Visible Cost?

A. Lost Customer Loyalty

B. Time Value of Money

C. Returns

D. Late Delivery

Bias refers to:

A. The variation in the average when the same product or service is measured by different operators using the same measuring equipment.

B. The way measurements are clustered around the center.

C. The variation between the average measurement value and the actual value of the reference standard under analysis.

D. The variation of a measurement against a standard or a quality tool which is accepted as a point of reference.

Which of the following is not true of `repeatability'?

A. The same measurement procedure

B. The same observer

C. The same measuring instrument used under different conditions

D. The same location