Question

CLO-3-5 Answer the following Questions 1) What do you mean by process is under Statistical Ouality Control OR What is difference between Variable data and Attribute data with one example 3 marks 12) Variations can take place in any manufacturing set up. List any four reasons for these variations 3 marks 13) Give the classification of Quality Control Charts

Answer 1

Answer 11= When a process is said to be in statistical control it indicates that the process is operating efficiency and this is capable of producing the products which are more specification conforming and have lesser wastages.

Answer 12= The main reasons for variation are given below=

• Change in environmental factors
• Change in internal factors of the organization
• Change in material specification
• Change in operator specification

Answer 13- Classification of quality control charts=

Charts for variables=

I=X bar charts

Ii= R charts

Charts for attributes=

I=p-charts or fraction defective charts

ii- np charts or number of defective charts

iii- C chart or constant sample size chart

iv-U chart or variable sample size chart

Answer 15= The main objective of the process capability ratio is to determine the capability of a process that is the ability of a process to produce the outputs which are within the specified limits.