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Question:

Identify the charts which might give an indication of process going out of control (before the process has actually changed)
  1. X bar and c
  2. P and c
  3. R and u
  4. X bar and R






Q2. The parameters of s2 chart is specified using:

  1. Normal Distribution
  2. Geometric Distribution
  3. Binomial Distribution
  4. Chi-square distribution
Correct Answer

Q3. The roof of house of quality shows the interrelationship between:

  1. Functional Requirements
  2. Design Attributes
  3. Service Process
  4. Manufacturing Process
Correct Answer

Q4. Consider that for a process s bar (average standard deviation of 50 samples each of size 4) is found to be 10.04. The value of c4 (corresponding to sample size of .4) is .92. What is the estimated value of process standard deviation?

  1. 10.91 (s bar/ c4 is an unbiased estimator of standard deviation)
  2. 11.89
  3. 12.67
  4. 9.67
Correct Answer

Q5. If the value of D4 = 2.547, D3=0, then what is the UCL and LCL for the R chart?

  1. UCL=1.5, LCL=.4
  2. UCL= 1.2, LCL=.2
  3. UCL=1.5, LCL=0
  4. UCL=1.6, LCL=0
Correct Answer

Q6. When data is plotted on the control charts, the data is of two types: R and -bar. The R data represent points of a ______________ while the X-bar data represent points of a(n) ______________.

  1. real sample; simulated sample
  2. 100 percent sampling; 10 percent sampling
  3. sampling run; average of several runs
  4. random sampling; continuous sampling
  5. random sample; cross-matrix sample
Correct Answer

Q7. Given L=3 and p=.03, estimate the sample size that can be used for construction of a p chart.

  1. 534
  2. 321
  3. 123
  4. 291 ((1-p)*L2/p gives us an estimate of sample size)
Correct Answer

Q8. 80% of the problems are found in 20% of the work is a concept of:

  1. Edward Deming
  2. Philip Crosby
  3. Juran
  4. Pareto
Correct Answer

Q9. In a double sampling plan, let d1 be the number of defects in the first sample and d2 be the number of defects in the second sample. Let c2 be the acceptance number for both samples. The condition for rejection is:

  1. D1+d2
  2. D1+d2>c2
  3. D1*d2>c2
  4. D1*d2
Correct Answer

Q10. The average run length can be defined as:

  1. The beta risk for an x bar chart
  2. The expected number of samples taken before any shift in process quality is detected
  3. The number of samples used in the construction of x bar chart
  4. The number of items per sample
Correct Answer








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