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 [...]
After reading this article you will learn about the steps and equipments of stop watch procedure for collecting time study data. Procedural Steps: The various steps involved are as follows: 1. Establish the quality to be achieved in the product. Strike a balance between a low and very high quality. Low quality means more rejection and scrap and very high [...]
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 [...]