Loyola College B.Sc. Statistics April 2012 Statistical Process Control Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.Sc. DEGREE EXAMINATION – STATISTICS

SIXTH SEMESTER – APRIL 2012

ST 6605/ST 6602 – STATISTICAL PROCESS CONTROL

Date : 20-04-2012              Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

PART – A

1. What is quality?
2. Write the need of Total Quality Management.
3. Write the purpose of Histogram.
4. Explain Q-Q Plot.
5. What is statistical process control?
6. Define ‘C’ chart.
7. Explain process capability analysis.
8. Explain the concept of subgroups.
9. What is Acceptance Sampling?
10. Explain consumer’s risk and producer’s risk.

PART – B

1. Describe Quality improvement in the modern business environment.
2. Explain the concept of 3-sigma limits. When do you say the process is out of control?
3. Describe the Box plot technique.
4. Describe process-capability analysis using a Histogram.
5. Explain the construction ofand R charts.
6. Write the advantages of acceptance sampling.
7. What are the basic principles of CUSUM control chart?
8. Explain the technique of single sampling plan for attributes.

PART C

1. (a) State the requirements for successful implementation of TQM.

(b) Discuss the relation between quality improvement and productivity.

1. (a) Draw the stem and leaf plot for the following data:

13,15,16,22,24,28,35,32,37,26,41,85,66,45,46,49,44,50,54,58,57,59,61,62,65,93,78,74,72,77,81,82,95,34,38,39,53,55,47,64,

(b) Explain Frequency distributions and its applications.

1. (a)Explain the construction of any two control charts for attributes.

(b) Write the applications of u chart and np chart.

1. (a) Explain the construction of CUSUM control chart.

(b) Explain double sampling plan in detail.

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