Statistical Quality Control Mock Test 3

10%

Question 1 of 10

1. For any process, the sample ranges are, 1.2,1.5,1.1,1.4,1.5. The subgroup size is 5. What will be the process standard deviation? Given: d₂=2.326 and A₂=0.577

2.322

2.463

0.511

0.576

Question 1 of 10

Question 2 of 10

2. Which of these formulas gives the exact equation for the UCL of s chart with a std. value for σ given?

B₅ σ

c₄ σ

c₃ σ

B₆ σ

Question 2 of 10

Question 3 of 10

3. Control limits are ___________

Statistical limits

Limits driven by the inherent variability of the process

Limits driven by the natural variability of the process

Limits defined by customers

Question 3 of 10

Question 4 of 10

4. What type of chart will be used to plot the number of defectives in the output of any process?

c chart

x bar chart

p chart

R chart

Question 4 of 10

Question 5 of 10

5. If for a process, the samples are taken 5 hrs apart and its ARL is 24.24, What will be ATS for it?

113.3

121.2

137.8

110.0

Question 5 of 10

Question 6 of 10

6. Defect concentration diagrams are an important part of ____________ step of DMAIC.

Define

Control

Improve

Analyze

Question 6 of 10

Question 7 of 10

7. Tolerances are said to be ________

limits of natural variability

Limits determined by the customers of the product

Statistical limits of variability

Limits of inherent process variability

Question 7 of 10

Question 8 of 10

8. For standard values of mean and standard deviation used, what does the center line of the R chart represent?

D₂ σ

d₂ R

d₂ σ

R bar

Question 8 of 10

Question 9 of 10

9. Check sheet shows ___________

If the process components are all checked

If the samples of the process are checked

If a process part is completed

Time oriented summary of defects

Question 9 of 10

Question 10 of 10

10. The center line for a \(\bar{\bar{x}}\) chart denotes ________

Mean of any sample + 0.5

(Mean of any sample) / 0.5

Mean of any sample

Mean of means of the sample

Question 10 of 10