Productions and Operations Management

Quality Associates, Inc., a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturing processes. IN one particular application, a client game quality associates a sample of 800 observations taken during a time in which that client's process was operating satisfactorily. The sample standard deviation for there data was .21 ; hence, with so much data, the population standard deviation was assumed to be .21. Quality associates then suggested that random samples of size 30 be taken periodically to monitor the process on an ongoing basis. BY analyzing the new samples, the client could quickly learn whether the process was operating satisfactorily. when the process was not

A process that monitors standards by take measurements and corrective action as needed. It is in control when only variation is natural, if variation is assignable then discover cause eliminate it. Take samples to inspect/ measure- reduce inspection time, reduce opportunity of bad quality. Control charts graph of process data over time-show natural and assignable causes. Control charts for variable data (characteristic that is measured, length,height, etc) are X-chart (average) and R-chart (range)must use x and r to get correct results. central limit theorem follow normal curve. When we know . When we don’t know . Control charts for attributes (categorical-defective, good/bad) P-chart (percent) or C-chart

One method of quality control can be pursued through process control procedures like statistical process control or SPC. SPC “involves testing a random sample of output from a process to

Quality Associates, Inc. is a consulting firm that advises its clients about sampling and statistical procedures that can be used to control manufacturing processes. In one case, a client provided Quality Associates with a sample of 800 observations that were taken during a time when the client's process was operating satisfactorily. The sample standard deviation for these data was .21, hence, the population standard deviation was assumed to be .21. Quality Associates then suggested that random samples of size 30 be taken periodically to monitor the process on an ongoing basis. By analyzing the new samples, the client could quickly learn whether the process was operating satisfactorily. When the process was not operating

Gioe Melaney is the general director of Southern Toro – a subsidiary company included in the distribution system of Toron Coporation in Galveston, Taxas.

Issue: Dynamic Seal, a precision parts manufacturer with a reputation for high quality, does not currently utilize a Statistical Process Control (SPC) system. However, United Airlines (UA), a major customer representing 14% of Dynamic Seal’s business, insists they implement an SPC system or loose United Airlines’ business. In addition Dynamic Seal do not have a sound preventative measure quality control system in place, preferring 100% inspection to cull bad quality, rather than building parts correctly from inception.

3.1 For each hotel, what is the role of technology and the role of operations

The case is based on an insurance service company which traced back to 1994. The company was facing problems in controlling and improving service quality and operation performance. This essay will stress on introducing the SPC (statistical process control) to DAV and providing suggestions on improving both the SPC and the company’s operation performance. The five questions required are covered and allocated

* Introduces the construction and use of statistical process control (SPC) charts and an understanding of the relationship between SPC and conformance quality.

The premise of this paper is to identify deficiencies in daily managerial processes by using systematic statistical process controls and make the necessary improvements. The paper will employ various examples and calculations along with supporting data to explain control limits and its importance to the statistical process control. The effects of seasonal factors and its relevance to a process will also be highlighted and how confidence intervals are important in giving insights into data sets that improve the entire statistical process control.

25.   Quality of conformance is concerned with whether a product or service conforms to its specifications.

A case study on “Influence of operations management on other business activities in an organization”.

I. Continuous Improvement in the Automotive Industry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 II. Statistical Process Control: A Scientific Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 III. A Case Study in SPC for Continuous Improvement: Cooper Tire . . . . . . . . . . . . . . . . . . . 4

The statistical process control system involving both acceptance sampling and automated process control was to be implemented. SPC involved testing for productions within a pre-specified range. If the production went beyond the range, the production process had to be shut down maintenance was to be called to perform maintenance and recalibration. As a part of the process, the operators were to take six random measurements of a process characteristic during the course of their shift and then plot the mean measured value.

As I entered the remaining classes in my concentration, Operations Management, I realized how each particular class subject had all come together, and how each was interrelated. Each class, each subject became more important to me as I realized their importance in the role of an operations manager.