Sampling plans may be classified as follows: 1. Single Sampling Plans 2. Double Sampling Plans 3. Multiple Sampling Plans 4. Sequential Sampling Plan (Item by Item Analysis). 1. Single Sampling Plans: A lot is accepted or rejected on the basis of a single sample drawn from that lot. i. Under this plan, a lot is accepted or rejected on [...]
The different steps involved in process planning are: 1. Preparation of Working Drawing 2. Make or Buy Decision 3. Process Selection 4. Machine Capacity 5. Process and Equipment Selection Procedure 6. Selection of Material, Jigs, etc. 7. Preparation of Documents. Step # 1. Preparation of Working Drawing: A product is depicted by its drawing. A working drawing is a document [...]
This article throws light upon the top fourteen tools and techniques used for statistical quality control. Some of the tools are: 1. Probability Concept 2. The Poisson Distribution 3. Normal Distribution 4. Confidence Limits 5. Measures of Central Tendency 6. Estimation 7. Significance Testing 8. Analysis of Variance 9. Control Charts 10. Life Testing 11. Reliability and Reliability Prediction and [...]