Scatter diagrams are most useful for which of the following?

A. Showing that output factor (Y) is normally distributed

B. Graphically showing the relationship between two variables

C. Determining whether a process is in control

D. Proving root causes of problems

While checking regression model assumptions, an engineer generates the following normal probability plot of residuals. Which of the actions below is the most appropriate next step?

A. Transform the response and re-fit the model

B. Investigate run order for a time pattern

C. Add runs, collect additional data and re-fit the model

D. Remove the highest order term from the model

What conclusion is most correct about the Experimental Design shown here with the response in the far right column?

A. No factor has enough statistical confidence greater than 95% to have an impact on the response rate

B. Constant, Adv and Bev are the only factors statistically affecting the response rate with 95% confidence or more

C. If the Adv is increased from the low level to the high level, the response rate increases

D. The response level is statistically concluded to only need the Adv and Bev factors set at the low level to get the largest response rate

E. This design does not have enough experimental runs to conclude anything as evidenced by the lack of P-values in the MINITABTM output

A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt's effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. Select the answer that best states the Practical Problem.

A. If the average cost per component is $4,200 or less, then the purchase manager will introduce the new product upgrade with new components.

B. If the average cost per component is greater than $4,200, then the purchase manager will introduce the new product upgrade with new components.

C. Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components.

D. If the average cost per new product upgrade is less than $180, then the purchase manager will introduce the new product upgrade with new components.

The validity of the decision made with Hypothesis Testing is dependent upon all of these except ___________________.

A. Beta risk

B. Alpha risk

C. Range of data

D. Sample size

If in an experiment all possible variable pairs sum to zero the design is Orthogonal.

A. True

B. False

For a Kanban to be successful which of these must occur?

A. Consistent cycle times

B. Fairly stable process demand of product or service

C. Low defect rate of incoming product or service

D. All of the above

On a _________________ one can see a pattern from the graphed points such that conclusions can be drawn about the largest family of Variation.

A. Multi-Vari Chart

B. Weighted Scale

C. X-Y Matrix

D. Poisson Chart

A statistical test or Hypothesis Test is performed to reject or fail to reject a stated hypothesis and it converts the Practical Problem into a Statistical Problem.

A. True

B. False

Using this data calculate the percentage of DPU. Data: 763 defects, 18,000 units.

A. 2.12

B. 3.42

C. 4.24

D. 5.72