Quality Question Bank
for Exam preparation

Q2. Average Total Inspection is defined as:

1. Average of rejected lots and accepted lots
2. Average number of units inspected per lot
3. Average of rejected Lots
4. Average of accepted Lots

Q3. For a Poisson distribution:

1. The mean is greater than the variance
2. The mean is less than variance
3. The mean is equal to the variance
4. Cannot be determined

Q4. All of the following statements about control charts are true except:

1. All data points outside the control chart limits are variations explained by
2. Control charts can be used to establish as well as maintain process control
3. A and B
4. B and C
5. Control charts are used to determine acceptance limits when no limits are stipulated by the product specification; otherwise, one should use the limits dictated by the specification

Q5. Cause and Effect Diagram can be used in the ______________ and ______________ step of DMAIC.

1. Define, Measure
2. Analyze, Control
3. Analyze, Improve
4. Define, Improve

Q6. For a c chart, the OC curve plots the ______________ against ______________.

1. Probability of Type 2 error, true mean number of defects
2. Probability of Type 1 error, true mean number of defects
3. Probability of Type 1 error, true total number of defects
4. Probability of Type 2 error, true total number of defects

Q7. The x bar chart monitors:

1. Between sample variability
2. Within sample variability
3. Instantaneous variability
4. Natural variability

Q8. In phase 1 of control chart usage, if a point is outside the control limits and some assignable cause is found for the point, then we should:

1. Discard the point but do not recalculate control limits
2. Discard the point and recalculate the control limit
3. Do not discard the point
4. Cannot be determined

Q9. In a factorial design, a main effect is the ______________.

1. the combined effect of the independent variables on the dependent variable
2. interaction effect of the independent variables and their effect on the dependent
3. the effect of each independent variable on the dependent variable
4. interaction of the independent variables

Q10. "Quality is defined by the customer" is

1. An unrealistic definition of quality
2. A user-based definition of quality
3. A manufacturing-based definition of quality
4. A product-based definition of quality