Statistical Quality Control — DU B.A. (Prog.) with Statistics as Major Discipline Previous Year Question Papers

8. (a) Prepare price i.ndex numbers for 2005 with 2002 as base year from the following data by using :(1) Laspeyre's, (ii) Paasche's and (iii) Fisher's formula 6.5 Article I Attic!e 1[ Article 1[1 Articl elv Price Qty. Price Qty. Price Qty. Price Qty. : statistical Quality Nane of the Course (b) What is meant by splicing of index numbe.rs? Explain with a suitable example. (d-) Select four questions from Section-A and one from Section-B. (a) What do you mean by quality? Discuss briefly various dimensions of quality. 5 (b) What do you understand by Statistical Quality Control? Distinguish between Process and product.control.. 5 (b) What are modified control limits? How they are derived. What is the need of constructing modified control limits? 6.5 2. (a.) Discuss and drive the construction of X and s charts for controlling process average and process variability-, when population 5. parameters are unknown. 6.5 (b) In order to determine whether or not a production of bronze casting is in control, 20 sub-groups of size six taken. The quality characteristics of interest. is the weight of the castings and it is found that i = 3.126 gin and R = O.009gm. Assuming that the process is in control, find upper and lower limits for the sub groups rieans and Range. 6.5 3. (a) Drive control,char`ts~ foi controlling the proportion rdefectives when sample size is notfixed. ~ T.` 6.5 (a) What is an OC curve? Draw its important points on the plot. Obtain its expression in a single sampling plan. 6.5 (b) Define AOQ and AOQL. For a single sampling plan obtain an expression for 6. Distinguish between: (b) Single sampling plan and double sampling plan 5 (c) Acceptance rejection and acceptance rectification plans 4 (b) When all sample points lie within 3o limits. Discuss the interpretation of control charts 7. (a) Whatdo you meanbyfamilybudget survey? for variables., and describe the major 4 Explain the method of constructing Cost of Western Electric rules for different non-living index numbers, also mention their random pattern. 6.5 4. (a) Discuss the average quality protection approach to decide the sample size and acceptance number in respect of single sampling plan. 6.5 (b) What is an index number? Describe briefly the problem that are involved in the construction of an index number of prices. 6.5 This table is taken from "Fundamental of Applied statistics by Gupta and Kapoor 1.924 1.864 2.004 1.816 1.777 3.267 2:575 2.282 2.115 Range chart Range chart 5.469 5.307 5,394 5.203 4.358 5.078 4.918 4:698 8:686 Dz Moan charE PROTORS UBEFUL IN THE CONSTAUGTON OF CONTROL CHARTE central line Factors for 2.326 2.704 2.970 2.534 2.847 3.078 2.059 1.693 1.128 diz 1:815 1.761 1.716 1.970 1.882 2.089 3.297 2.568 2:266 BA Standard deviațion chart l central line size Factors for Factors for control limits Saraple Standard deviation charț